Photo shows handwritten notes on people trying to flee Afghanistan stuffed inside a Humvee, as the US scrambles to get people out

• Handwritten details of people trying to leave Afghanistan were photographed in a Humvee in Kabul.
• Foreign citizens and Afghans who helped other countries are among those wanting to flee the Taliban.
• The US has been scrambling to get those people out, but the process is slow.

A photo shows handwritten notes on people trying to flee Afghanistan crammed inside a Humvee in Kabul.

The photo, taken last Thursday by the photographer Wakil Kohsar, shows the stacks of sheets inside a Humvee parked in front of the British and Canadian embassies in Kabul, which are next to each other.

It is not clear what country the people detailed are from, or wish to go to. It's also not clear if they are people from other countries who now wish to return home, or if they are Afghans who helped other countries and fear Taliban retribution, or if they are other people trying to flee on humanitarian grounds.

All those people - even foreign citizens and Afghans who have been given visas - are struggling to leave in the chaos of the Taliban takeover.

President Joe Biden on Sunday acknowledged that US citizens were still stuck in Afghanistan, saying the US was working to increase access to the airport.

Multiple reports say that many people who have documents allowing them to leave the country, including Afghan nationals, had been blocked from accessing the airport by the Taliban.

Many Afghans who have helped the US are still waiting for their visas to be approved.

A White House official told NBC News' Geoff Bennett that as of Monday, 37,000 people had been evacuated from Afghanistan.

Biden said last week that he would keep US troops in the country until all Americans who wants to leave has done so, hinting he could keep a presence there after his August 31 deadline for troop withdrawal. The Taliban warned of "consequences" if that happened.