We are going to pause our live coverage. Here's a summary of the latest developments:

• Earlier on Thursday, EgyptAir said debris found floating on the Mediterranean Sea was from the missing flight
• But after a top Greek official disputed this, saying the wreckage found wasn't actually from the airliner, the company's vice president reportedly retracted that claim
• There has been no official statement on the wreckage from EgyptAir since

• Officials and experts say the plane is more likely to have been brought down by a terrorist act than a technical fault  
• You can go through the latest here
• Here is what we know so far

A US review of satellite images has produced no signs of an explosion on board, Reuters news agency reports, quoting officials from multiple US agencies.

The unnamed sources told Reuters that the US has not ruled out any possible causes for the crash, including mechanical failure, terrorism or a deliberate act by the pilot or crew.

Many international governments are assisting in the search for the airplane.

Investigators need to establish whether the crash was an accident, or a terrorist act.

EgyptAir has retracted its claim that wreckage from its missing plane had been found in the Mediterranean, CNN reports.

This would confirm an earlier statement by Greece's lead air accident investigator Athanasios Binis, who said the wreckage found near the Greek island of Karpathos was not from the missing Airbus A320.

EgyptAir has updated its profile pictures on Twitter and Facebook, changing them to its logo on a black background.

On Facebook, there is also a reference to MS804, the number of the flight that disappeared while flying from Paris to Cairo.

Image source, Facebook

Investigators are in a "race against time" to find out what happened to MS804, an expert says.

Steven Saint Amour works for a subsea technical company. He told Bloomberg, external that there are types of evidence, like chemical residue, that will deteriorate over time if the plane is not found quickly. 

 "You really don’t want to wait until the last minute," he says - but he doesn't say exactly how much time he thinks investigators have.

Image source, Reuters

Egypt's president Abdul Fattah al-Sisi has ordered the country's civil aviation ministry and military to take all necessary measures to locate debris from the missing plane.

In a statement issued by his office, Mr Sisi also ordered an investigative committee formed by the civil aviation ministry to start investigating the causes of the plane's disappearance. 

Greek and Egyptian naval forces and the British Royal Air Force have been combing the waters in the southern Mediterranean Sea.

Two Canadian citizens were on board the EgyptAir flight, the Canadian government says., external

Foreign Affairs Minister Stephane Dion said that officials were working with authorities to confirm whether there were any other Canadian citizens on board.

"We are providing consular assistance to the families," he said.

"Global Affairs Canada is also working with French and Egyptian counterparts as well as other impacted countries to assess the situation and consider any requests for support," he said, referring to the country's foreign ministry.

One of the most common planes on earth, with an excellent safety record and an experienced pilot and co-pilot, crashes. Why? The BBC's transport correspondent, Richard Westcott reports.

Some confusion continues over the wreckage that has been found in the Mediterranean.

Earlier, EgyptAir said the debris was confirmed to be from flight MS804.

But now, the head of the Greek air safety authority, Athanassios Binos, has told state ERT TV that the wreckage "does not come from a plane".

He said: "Up to now the analysis of the debris indicates that it does not come from a plane, my Egyptian counterpart also confirmed to me that it was not yet proven that the debris came from the EgyptAir flight when we were last in contact around 1745 GMT."

Officials say all potential debris located so far in the sea has been spotted by Egyptian aircraft. 

Image source, Reuters

As the focus moves on to finding out what caused the EgyptAir crash, here is what we know about the Airbus plane:

• Greece's Civil Aviation Authority says traffic controllers' last communication with the EgyptAir pilot found him "in good spirits".
• In the 24 hours before it disappeared, the plane, registration SU-GCC, had carried out three other trips: a return trip from Cairo to Tunis, and then the flight from Cairo to Paris.
• Airbus said the missing A320 was delivered to EgyptAir in November 2003 and had operated about 48,000 flight hours.
• The pilot had clocked up 6,275 hours of flying experience, including 2,101 hours on the A320, while the first officer had 2,766 hours, EgyptAir said, according to Reuters.

The Briton believed to have been on EgyptAir flight MS804, Richard Osman, has been described as a "kind and loving" father of two. 

Mr Osman's younger brother, Alastair Osman, said he was an admirable person who had recently had a second child.

He told ITV News: "Richard was a very kind person, loving person, very focused... 

"A very admirable person and a lot of people admired him for his strength and values." 

Alastair said family members were advising each other not to listen to the media too much due to conflicting evidence. 

"Time is the only thing that will get us closer to the truth," he said. 

Asked about why his brother was on the flight, Alastair added: "He would've been going to work I assume. I know he works in both Egypt and another country in Africa."

You can read more about Mr Osman here. 

Officers who were on duty at Charles de Gaulle airport in Paris on Wednesday evening were being interviewed, a police source told the Reuters news agency.

"We are in the early stage here," the source said. 

Security at airports in Paris had been tightened since last year's attacks in the French capital. 

Image source, EPA

The BBC's James Reynolds in Paris said it was understood three members of France's agency that investigates air accidents, BEA, were on their way to Cairo to advise and assist the Egyptian authorities on the search for wreckage. 

He said they would be able to advise on underwater searches for flight recorders. 

A technical adviser from Airbus, which is built in France, will also be sent from France to Cairo. 

Our correspondent added that France was playing a part in the investigation but would not play a leading role. 

John Goglia, a former US National Transportation Safety Board member, said early indications point more to a bomb than to a structural or mechanical failure behind EgyptAir flight's crash. 

Mr Goglia told the Associated Press news agency that "given the fact that (the pilot) made those abrupt turns without broadcasting any maydays would indicate to me that something catastrophic like a device happened".

He says a mechanical failure "still has to be considered but at this point I would put that down pretty low".'

He adds that another scenario, like structural failure, is also possible, but unlikely.

The BBC's security correspondent Frank Gardner says there are three possibilities for what happened to the MS804 flight.

• Catastrophic mechanical failure
• A disturbance in the cockpit
• An explosion on board

If there was a bomb on board, he told the Outside Source programme on the BBC News Channel and World News channel, it could have been smuggled on board at Paris or at one of the other airports the aircraft had been to recently - these include Tunis (in Tunisia), Cairo and Asmara (in Eritrea).

The BBC's Kevin Connolly in Cairo says the focus will now turn to finding out what caused the EgyptAir flight to crash.

He says officials have released very little information, but suggestions have grown stronger that terrorism is behind the crash.

"The flow of information has been slow," he told the BBC's World News TV channel.

"People now accept that passengers and crew on board are lost. 

"The time has come to investigate what caused it to crash."

An aviation stream announces that the MS804's name is changing after the crash.

There is no confirmation of this from EgyptAir, but the move would not be unusual. After the Malaysia Airlines flight MH370 went missing, the airline's Kuala Lumpur to Beijing route was re-named MH360

Image source, Athena Picture Agency

One of the 66 people on board the EgyptAir flight that crashed in the eastern Mediterranean Sea was a passenger from Wales.

Richard Osman, who was 40 years old, was a geologist who was born in the town of Carmarthen in south Wales. 

He was the eldest child of an Egyptian medical doctor and grew up in Wales.

He had worked in Australia and Egypt.

Read more about him here.