Explosion at Kabul airport appears to be suicide attack -U.S. official

An explosion outside Kabul airport appeared to be caused by a suicide bomb, a U.S. official said on Thursday, citing an initial report and cautioning that it could change.

The exact number of casualties is unclear at the moment.

An explosion occurred outside the Kabul International airport on Thursday even as hordes of Afghans were attempting to flee the country after the Taliban takeover.