Biden briefed on explosion at Kabul airport
Details of the explosion at Kabul airport remain unclear. There have been some reports of gunfire on the ground.
The explosion has occurred at the Abbey gate entrance where British troops have been stationed in recent days. It was one of three gates that had been closed followings warnings of a terrorist threat.
A US official has told Reuters news agency the explosion was caused by a suicide bomber.
The White House has confirmed that President Biden has been briefed on developments.