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At the Pentagon's daily briefing, spokesman John Kirby warned of "specific, credible threats" out of Afghanistan.

"We have additional information," Kirby said, adding that the US was monitoring the threats "virtually, in real time".

Here's what else we know from the briefing:

• The Pentagon confirms there was only one explosion outside Kabul's airport on Thursday, after initially reporting a second bomber
• Some of those injured in the bombing have been flown to Germany for treatment
• The US will continue its evacuations "right up until the last moment", Kirby said, when pressed on the looming 31 August withdrawal deadline
• More than 110,000 people have been airlifted from Kabul so far. Roughly 5,400 remain at the airport, awaiting evacuation
• Asked about IS-K, the jihadist group behind yesterday's attack, Kirby said the US took the group "very seriously". "We’re not going to allow attacks on the homeland to emanate from Afghanistan again like they did 20 years ago."

French officials have met Taliban representatives to discuss evacuation efforts from Kabul, the country's foreign ministry has confirmed.

Earlier, Taliban spokesman Suhail Shaheen tweeted that a meeting had taken place in the Qatari capital Doha on Thursday.

"Operational contacts have indeed taken place in recent days with representatives of the Taliban movement, in Kabul as well as in Doha, in order to facilitate our current evacuation operations," the foreign ministry said in a statement sent to Reuters news agency.

France is still trying to evacuate several hundred Afghans. European Affairs Minister Clement Beaune has indicated evacuations might continue beyond a deadline of Friday evening.

Tiffany Wertheimer, BBC News

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Imagine being afraid for your safety because you have been learning to play the piano or sitar.

This is what students and staff at the Afghanistan National Institute of Music (ANIM) are now facing, after the Taliban said they would ban music following their takeover of the country. The doors of the celebrated school are closed, and its hallways have fallen silent.

"The students are all fearful and concerned. They clearly understand that if they return to the school, they might face consequences or be punished for what they've been doing," the school's founder and director, Dr Ahmad Sarmast, told the BBC.

He said some students had returned their instruments to the school when the Taliban descended on the city. This was deemed safer than keeping them at home, where fighters from the Islamist group might find them.

Read the full story here.

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The United Nations Security Council has urged the international community to bring those responsible for the bombing at Kabul airport to justice.

"The members of the Security Council underlined the need to hold perpetrators, organizers, financiers and sponsors of these reprehensible acts of terrorism accountable and bring them to justice," the statement by the 15-member council said.

"They urged all states, in accordance with their obligations under international law and relevant Security Council resolutions, to cooperate actively with all relevant authorities in this regard," it added.

The Council said it "condemned in the strongest terms the deplorable attacks".

It also "reiterated the importance of combating terrorism in Afghanistan to ensure the territory of Afghanistan should not be used to threaten or attack any country, and that no Afghan group or individual should support terrorists operating on the territory of any country."

The statement was released before the Pentagon briefing which spoke of one rather than two bomb attacks.

At least 90 people, among them 13 US military personnel, were killed following the attack at the airport on Thursday.

At least 150 people were also wounded. The Islamic State group says it was behind attack.

More on the deaths of the British nationals.

UK Foreign Secretary Dominic Raab said in a statement that he was "deeply saddened" at news of the deaths, adding that two other British nationals were also wounded.

"These were innocent people and it is a tragedy that as they sought to bring their loved ones to safety in the UK they were murdered by cowardly terrorists," he said.

He said the deadly attack outside Kabul airport "reinforces why we are doing all we can to get people out".

"We will not turn our backs on those who look to us in their hour of need, and we will never be cowed by terrorists."

Two British nationals were among those killed in yesterday's attack in Kabul, along with the child of another British national, the UK government has announced.

No further details were provided.

Pakistan's ambassador to Afghanistan has been asked about the threat from terrorist groups on the country's adjoining border with Afghanistan.

Mansoor Ahmad Khan denied that terrorists had entered Afghanistan via its border and called for international efforts to deal with the security threat.

He spoke to BBC News chief international correspondent, Lyse Doucet.

Asked about the jihadist group that said it was behind the attacks in Kabul, the Islamic State Khorasan Province, or IS-K, Pentagon spokesman John Kirby said the US took the group "very seriously".

"Obviously they are a serious terror threat," he says, adding: "I think the threat is real and nobody wants to see that threat grow.

"We're not going to allow attacks on the homeland to emanate from Afghanistan again like they did 20 years ago."

Image source, EPA

Back in the Pentagon briefing room, spokesman John Kirby is fielding questions on how yesterday's attack occurred.

Kirby acknowledges that the US efforts "fell short", adding the US military is prepared for additional attacks.

"We still believe there are credible threats," he says, adding: "In fact, I'd say specific, credible threats."

Earlier in the briefing, Kirby said the US planned to honour the 31 August withdrawal deadline.

After the American military has left, the US will explore additional ways to facilitate flights out of the country.

"This doesn't necessarily involve the United States military," he says.

Kirby also says the Pentagon would be more "judicious" in supplying operational details like troop numbers going forward because of security concerns.

Pentagon spokesman John Kirby is now addressing reporters. He says the US mission to evacuate people from Kabul airport will continue until the deadline of 31 August.

"We'll be able to fly out evacuees right up until the last moment," he says.

Image source, EPA

More than 5,000 Americans have been safely evacuated from Afghanistan, Maj Gen William Taylor says, as the 31 August deadline approaches for the US withdrawal.

A total of 111,000 people have been airlifted out of Afghanistan as part of the evacuation mission.

There are still about 5,400 at Kabul's airport awaiting flights out, Taylor says.

"There are more than 5,000 American service members in harm's way, serving as many people they can," Taylor says. "We've seen first hand how dangerous that mission is. But ISIS will not deter us."

Maj Gen Taylor says some of those injured in yesterday's bombings near Kabul airport are now receiving treatment in Germany.

"Two flights landed at [Germany's Ramstein Air Base] carrying our wounded personnel and they are receiving care."

Major Gen William Taylor is at the podium for today's Pentagon briefing.

He tells reporters the US military believes yesterday's explosion was a single suicide bomber - there was no second blast near the hotel.

"We do not believe there was a second explosion," he says. "We felt it was important to correct the record with you all here."

The Pentagon is now giving a briefing on the situation in Afghanistan - we'll bring you updates.

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Democratic Congressman Seth Moulton on Friday called the chaos in Afghanistan a "failure of Washington", speaking on CBS News after his unauthorised trip to Kabul.

Moulton and his Republican colleague and fellow Iraq war veteran, Michigan Congressman Peter Meijer, stunned Washington this week when they secretly flew to Kabul to get the "full story" on the evacuation effort.

"America needs to know what's going on there," Moulton said on Friday.

Asked about the Pentagon's disapproval of his trip, Moulton said he "didn't care" what people in Washington said.

Moulton described desperation in refugee camps, where Afghans do not have enough food or water "because the administration lawyers are preventing donations".

He stood by President Joe Biden's 31 August deadline for withdrawal, but added that the scenes of violence and despair out of Kabul could have been avoided.

"All we had to do was start this evacuation earlier," he said.

With the end in sight for air evacuations out of Kabul airport, it is still not clear how many Afghans are trying to leave the country.

Several thousand Afghans are said to have fled into Pakistan using the Spin Boldak crossing point in southern Afghanistan.

Satellite imagery of the area from Thursday shows a large crowd of people gathered on the Afghan side:

The BBC's Shumaila Jaffery, who was at the Spin Boldak crossing on Thursday, said it was a chaotic scene with many of those who had travelled to the border not being allowed to cross.

You can read more on this, and get the most up-to-date numbers on those now evacuated, here.

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Former US President Barack Obama says he feels "heartbroken" by the deadly terrorist attacks outside Kabul airport.

Obama, who deployed thousands of US troops to Afghanistan after inheriting the mission against the Taliban from George W Bush, described American soldiers as "heroes who have been engaged in a dangerous, selfless mission to save the lives of others".

In a statement, Obama said: "As president, nothing was more painful than grieving with the loved ones of Americans who gave their lives serving our country."

He said he was grieving for the US and Afghan families who had lost loved ones.

"Thinking of the families of the Afghans who died, many of whom stood by America and were willing to risk everything for a chance at a better life."

More than 2,400 US troops have been killed in Afghanistan, external since the conflict there began in 2001, according to the latest US Defence figures.

The UK has evacuated nearly 8,000 Afghans who worked for the government - here's what happens next.

• Arrivals on official flights enter a 10-day Covid quarantine in a hotel
• Government officials and local authorities are trying to find them permanent homes
• A shortage of suitable accommodation means many will be placed in hotels
• Some will get refugee status and can live in the UK permanently
• Others will get a five-year visa to live and work in the UK - and can then apply for permanent residence
• Afghans arriving independently will enter the normal system for asylum claims - which has a backlog of 70,000 people
• These people cannot settle, or work, while their claims are considered

A former Afghan interpreter who worked for the British Army has described getting on a UK military plane out of Afghanistan as the "happiest moment of my life".

Burhan and his family had begged the British government for help to escape last week.

Speaking from his hotel quarantine, he said he was "very thankful" for his new life, but called on the UK to do more to evacuate other interpreters left behind as "they are in danger".

Here are the stories of others who have made it to the UK.

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Russian Foreign Minister Sergei Lavrov has criticised the West in the wake of the Kabul bombings.

"A lesson must be learned: Attempts to impose an alien system of values are quite explosive," he told a news conference in Rome after talks with his Italian counterpart, as quoted by the Interfax news agency.

"I hope that politicians who contemplate further action in foreign lands will have this conclusion entrenched in their minds at [the] third time of asking."

He condemned the bombings and called for an "inclusive interim government" involving "all the main political forces" in Afghanistan.

"For us it is fundamentally important to to ensure the security of our southern frontiers, [and] of our allies in Central Asia," he added.

While US and European governments have been racing to get their citizens and Afghan colleagues out of Kabul, Russia has been one of very few countries not visibly alarmed by the Taliban takeover.

Moscow has been building contacts with the Taliban for some time. The former Western-backed Afghan government even accused Russia's presidential envoy of being an open supporter of the Taliban, something Russia denied.

Read more: Russia plans for new era with Taliban rule