A deadly attack not far from Bagram air base, the largest U.S. military facility in Afghanistan.
At least 14 people including four Czech soldiers were killed in the explosion triggered by a suicide bomber on a bike.
A team of Afghan and international forces were in the area to investigate a rocket attack that happened two days earlier.
The Taliban claimed responsibility for the attack in a text message to Reuters.
The blast is just the latest sign of deteriorating security in Afghanistan as international forces prepare to leave after 12 years of war with Taliban insurgents.
