Jamie Whitehead
Live reporter

Image source, EPA

At the moment, 1,644 people are known to have died in the devastating earthquake which hit Myanmar on Friday, the strength of which was so severe the quake was felt in neighbouring countries Thailand and Pakistan.

As rescue operations continue in both Myanmar and Thailand, here's a quick roundup of the latest lines:

• Myanmar's military leadership says 3,408 people there are injured as as result of the earthquake, with 139 still missing
• Ten people have died, 42 have been injured and 78 are missing in Bangkok
• In Mandalay, the city closest to the epicentre of the earthquake, 90 people are thought to be trapped under an apartment building. Over 1,500 homes have been damaged in the region
• But the AFP news agency is reporting that a woman was pulled from the rubble alive after being trapped for 30 hours
• As authorities in Myanmar desperately search for survivors, the People's Defence Force has reported air strikes by the military near the epicentre of the earthquake
• And in Bangkok, robots have been bought in to assist with the rescue efforts

We'll be continuing our coverage from our newsroom in London in collaboration with BBC Burmese in Yangon and reporters in Bangkok, so stick with us.

Image source, Getty Images

Earlier, we reported that rescue workers were trying to free up to 90 people trapped under a collapsed apartment block in Mandalay, Myanmar.

Now, AFP says a 30-year-old woman has been pulled alive from the rubble after she was trapped for around 30 hours.

She was carried out on a stretcher, embraced by her husband and then taken to hospital, according to the news agency.

"In the beginning I didn't think she would be alive," her husband told AFP as he waited during the rescue. "I am very happy that I heard good news."

In our last post, we reported that Myanmar's military leadership said the death toll there has risen to 1,644.

The Bangkok Municipality Authority has also released updated figures. As of 18:30 local time, it said 10 people are confirmed dead, 42 injured, and 78 still missing.

Image source, Reuters

BBC Burmese Service

The death toll in Myanmar has risen to 1,644, the country's military leadership says, while the number of injured has gone up to 3,408, with 139 missing.

Rebecca Henschke
BBC Eye reporter and former Asia editor

The Myanmar military is continuing to carry out air strikes in areas declared states of emergency.

The People’s Defence Force – a network of pro-democracy civilian Milita groups - have reported air strikes in Chang-U township in Sagaing near the epicentre of the devastating quake.

David Eubank from the humanitarian resistance group the Free Burma Rangers told the BBC that “since the earthquake there’s been three air strikes in southern Shan state and Kareni last night. So, they are not stopping.”

The United Nations body investigating human rights violations in the country has warned that the military is carrying out war crimes and crimes against humanity against its own people.

The military are trying to crush a nationwide pro-democracy armed uprising that’s fighting to remove them from power.

A BBC data investigation late last year found the military now only has control of less than a quarter of the country.

In the air, the military has the upper hand. Using Russian and Chinese made fighter jets the military have been carrying out devastating air strikes across the country.

They have hit schools, monasteries churches and hospitals. In one of the deadliest air strikes to date more than 170 people were killed, including many women and children.

Matt Spivey
Live editor

Image source, EPA

A deadly earthquake has sent a ripple effect of destruction across parts of South East Asia. As evening draws closer in Myanmar and Thailand let's take stock of what we know, a day on from the disaster.

More than 1,000 people have died as a result of the tremors from the 7.7 magnitude quake, that reached as far as Thailand and China.

Rescue operations are ongoing to find survivors among huge piles of rubble where buildings had stood yesterday morning. Families of the 50 people who remain missing at the site of a building collapse in Bangkok are waiting for news of their loved ones.

Rescuers says at least 15 people are believed to still be alive under the rubble as the teams working to recover survivors refuse to give up hope.

In Mandalay, the city closest to the epicentre of the earthquake in Myanmar, 90 people are presumed trapped under a flattened block of apartments. In total, more than 1,500 homes have been damaged in the region, the country's military council says.

One resident in Mandalay says they have "lost everything".

The international community have been offering humanitarian aid and support to both Myanmar and Thailand, as the Association of South East Asian Nations (Asean) says they will work to facilitate relief operations.

As Myanmar is dealing with the aftermath of the earthquake, air strikes in Myanmar have continued amid the ongoing troubles of the war-torn country. We'll have more on that in our next post from the BBC's former Asia editor. Stay with us.

Tessa Wong
Reporting from Bangkok

Rescue work at the site of a collapsed building in Bangkok still remains agonisingly slow. I just spoke to a rescue worker who said that they haven't found any bodies.

This contradicts earlier reports we heard that they had found three bodies in a shaft, but bear in mind that the situation is quite fluid and there are hundreds of rescue workers spread across a huge site.

The rescue worker also told me that they are now searching basement areas with robots.

He said that a section had collapsed earlier during their search - underscoring the instability of the mountain of debris.

Earlier we heard from officials who made a similar point - that as the building had "collapsed like a pancake" it was still collapsing further, hence their use of smaller tools rather than heavy machinery for rescue work.

My colleague Steve snapped these pictures of search robots rolled out on site earlier today:

It's now evening in Myanmar, and rescue efforts are ongoing in the search for survivors under the rubble.

We've just received these pictures from earlier today which show some of the devastations caused by the 7.7 magnitude earthquake.

Image source, EPA

Image source, Reuters

Image source, Reuters

Image source, Reuters

Vicky Wong
BBC News

Speaking to the BBC, an earthquake engineering expert says there is a chance that buildings could be damaged further due to aftershocks.

He adds that it is still possible to retrofit them to withstand earthquakes in the future.

Professor Emily So, Director of the Cambridge University Centre for Risk in the Built Environment, tells us that there are many ways of designing buildings to withstand earthquakes.

These designs features include building solid but flexible foundations, having seismic dampeners for tall buildings and using ductile materials or braced frames.

Professor So adds that "seismic retrofitting" - the strengthening older buildings to meet modern earthquake safety standards - is already being done in Canada and New Zealand.

She cites an example in British Columbia, Canada, where hundreds of schools are being upgradedto minimize structural collapse from earthquakes., external

Esme Stallard
Climate and science reporter

Image source, Reuters

Even though Myanmar is a high risk region for earthquakes – Bangkok is not. It is more than 1000km (621 miles) from the epicentre of the earthquake. Yet, despite this we have seen that striking video of a building under construction collapse. The reason is two-fold – social and geological.

A 'flat slab' system?

Historically, Bangkok did not construct its buildings to withstand earthquakes, such construction methods although safer are often more costly.

This means that older buildings would have been particularly vulnerable.

Although the building that collapsed would have had to conform to these updated standards, Imperial College London senior lecturer Dr Málaga-Chuquitaype says looking at the video it appears a ‘flat slab’ construction process was being favoured.

“A ‘flat slab’ system is a way of constructing buildings where floors are made to rest directly on columns, without using beams — imagine a table supported only by legs, with no extra horizontal supports underneath... so it performs poorly during earthquakes, often failing in a brittle and sudden (almost explosive) manner.”

The geological conditions did not help

At this time, it is thought that the earthquake was caused by two blocks of earth slipping past each other along the Sagaing fault.

“The Sagaing fault is very long, 1200 km, and very straight. The straight nature means earthquakes can rupture over large areas,” explains Dr Rebecca Bell, reader in tectonics at Imperial College London.

The long fault allowed the energy to travel further, the earthquake was also shallow which would have intensified what was felt at the surface.

Then finally Bangkok is built on soft soil which causes the seismic waves to build up and amplifies the ground shaking.

Esme Stallard
Climate and science reporter

Image source, BBC; USGS

Myanmar is in a very geologically "active" area - that means there is a lot of movement of the earth's crust going on.

It is at the convergence of four tectonic plates - the Eurasian plate, the Indian plate, the Sunda plate and the Burma plate - which are all moving in relation to each other. This significantly raises the chances of the region experiencing an earthquake.

"To accommodate all this motion faults have formed that allow tectonic plate slithers to move sideways," explains Dr Rebecca Bell, reader in tectonics at Imperial College London.

There is a major fault - a fracture between rocks - called the Sagaing fault very close to where this earthquake happened. The fault cuts right through the country north to south and runs for more than 1,200km (746 miles).

The early data suggests that the movement of the earth that caused the earthquake was a "strike-slip" - where two blocks move horizontally to each other.

This aligns with the movement we typically see of the Sagaing fault, Bell adds.

The earthquake struck close to Myanmar's second largest city, Mandalay, at 06:20 GMT on Friday - around noon in South East Asia.

The main shock was recorded as a magnitude 7.7 earthquake by the United States Geological Survey (USGS).

The earthquake was relatively shallow - about 10km down - meaning its effect was felt more strongly on the surface than a deeper quake would have been.

A second earthquake struck 12 minutes later, with a magnitude of 6.4, and a number of smaller tremors have been recorded since.

In our next few posts, we'll take a look at what was happening underground that caused the earthquake, and why buildings in neighbouring Thailand were vulnerable to collapse.

Image source, Reuters

King Charles III has sent a message of condolence to the people of Myanmar, as yesterday's earthquake has killed more than 1,000 people, according to the country's military.

In a statement, he says: "I know that the people of Myanmar continue to endure so much hardship and tragedy in your lives, and I have long admired your extraordinary resilience and spirit.

"At this most difficult and heartbreaking of times, my wife and I send our deepest possible sympathy to all those who have suffered the profound tragedy of losing their loved ones, their homes and their precious livelihoods."

One person who lives in Mandalay - a region very close to the epicentre - has been speaking to the BBC's World Service about the aftermath of the earthquake.

"I feel so sorry to see this situation. All the pagodas and temples, including stairways, in my village have collapsed" they say.

"We lost everything. I feel so sad to see this kind of sorrowful situation.

"Up until now, I've never experienced anything similar to this. This is the first time. I am very sad."

BBC Burmese Service, Yangon

Locals in Nay Pyi Taw, headquarters of the military junta, have been hit by a number of aftershocks since 15:00 (08:00 GMT) local time today.

"It shook at least six times during the night. Most people are now running to and from monasteries and other places," said a local.

Nay Pyi Taw has seen extensive damage with one of the highest number of casualties, collapsed buildings and buckled roads. The junta chief Min Aung Hlaing was reported to have visited hospitals, which have been overwhelmed.

As a reminder, according to the latest statement from the military council late this morning, the death toll from the Myanmar earthquake has reached 1007, with thousands injured.

Speaking to the BBC, Francesca Capoluongo from the International Federation of the Red Cross in Myanmar said millions of people are at risk following yesterday's earthquake.

Capoluongo says "the initial estimates suggest that over 18 million people live within the earthquake impacted area, so of course we can expect these figures to keep increasing.

"The search and rescue is still ongoing. It's very difficult now to validate any figure, and we know that it will continue to increase and (that) many of these eighteen million people are now without safe shelter, access to clean water, reliable health care."

• As a reminder, the official number of fatalities from the earthquake in Myanmar is 1,007, according to the country's military.

Tessa Wong
Reporting from Bangkok

We can bring you more now from Bangkok, after a flurry of activity at the site of a collapsed building, where at least 15 people are believed to be alive under the rubble and 100 others are missing.

A growing number of international players have been pitching in for the rescue of those trapped in the Bangkok building collapse.

In the last few minutes I've seen members of China's Blue Sky Rescue team - the country's largest volunteer rescue team - enter the site.

Meanwhile, my colleague Nick spoke to US army officers emerging from the rescue site.

"We are just trying to bring as many resources as we can to help out our allied partner... we are just trying to get a handle on it right now," one said.

Image source, EPA

A Red Cross official tells news outlet Agency France-Presse that more than 90 people could be trapped in the collapsed remains of an apartment block in Mandalay, Myanmar.

In a recent update, Myanmar's military council says more than 1,500 houses have been damaged in Mandalay alone.

BBC Burmese Service, Yangon

Among the buildings that collapsed in Kyaukse, in the Mandalay region, was the West Mye Mye Kyi pre-school.

Rescue workers said that the bodies of 12 preschool children and a teacher were found this morning.

More are said to be trapped inside the collapsed building, and chances of survival become bleaker with time.

There were unconfirmed reports that around 50 children and six teachers were missing after the building collapsed.

“The approximate number of people in the school is 50, but we only have a list of the number of people who were evacuated. We have only evacuated 13 bodies,” said a member of the rescue team.

Kyaukse Dam administration, the Red Cross, and social assistance groups have been helping in the rescue. In Kyaukse town, houses and shops also collapsed due to the earthquake.

Tessa Wong
Reporting from Bangkok

In the last few minutes there's been a flurry of activity at the site of a collapsed building in Bangkok, where 100 people are still unaccounted for, with workers putting up white tents and sheets.

It remains unclear what we are expecting, but Thai media are reporting three survivors have been found in a shaft amid the rubble.

Stay with us as we bring you more updates when we get them.