President Joe Biden is being briefed on the bloody attack against Kabul's airport, the White House said Thursday, delaying a planned meeting with Israel's visiting prime minister.

"The president has been briefed and he is in the Situation Room," an official told AFP on condition of anonymity.

As a result of the crisis, a meeting with Prime Minister Naftali Bennett planned for 11:30 (1530 GMT) "will be delayed," a White House official said.

"There is not yet an updated time for the meeting," a spokesman for Bennett said, adding the delay was due "to the events in Afghanistan."

At least six people were killed and a dozen wounded outside Kabul's airport in two explosions as the United States entered the final days of a massive evacuation of troops and allies to end its two-decades long war against the Taliban.