"High terror threat at Kabul Airport, leave immediately"

New Delhi : The western nations have warned their citizens to leave Kabul airport and surroundings immediately as they have warned of a 'high terror threat'.

Several people have been crowding Kabul airport in a bid to get airlifted from the nation. More than 90,000 people have been evacuated from Afghanistan since August 15, when Taliban took over the nation.

One reason for the hard deadline cited by Biden and his aides this week was an "acute" terrorist threat from the regional chapter of the Islamic State group.

The US government and allies sounded an alarm for its citizens on Thursday to avoid the airport area.

"Those at the Abbey Gate, East Gate, or North Gate now should leave immediately," said the US State Department, citing unspecified "security threats".

Australia's department of foreign affairs said there was an "ongoing and very high threat of terrorist attack". 

"Do not travel to Kabul Hamid Karzai International Airport. If you're in the area of the airport, move to a safe location and await further advice."

London issued a similar warning, adding "if you can leave Afghanistan safely by other means, you should do so immediately".