The attack, which killed at least two and wounded 12 people, comes days after an attack on Kabul's Hotel Intercontinental. Aid agency temporarily suspends operations.
The latest incident claimed by Taliban took place in Nangarhar province. There've been many cases when Afghan soldiers or police turned their guns on international troops in so-called "green-on-blue" attacks.
The attack came hours after a policeman killed five colleagues in their sleep at an outpost in eastern Nangarhar province.
The US military on Thursday dropped its most powerful non-nuclear bomb, the Massive Ordnance Air Blast (MOAB), in Nangarhar, Afghanistan, targeting the caves held by Daesh.
As the militant group steps up its attacks in the country, Afghans still see Daesh as a mysterious foreign entity whose makeup and intentions remain unclear to both officials and locals living under the group's rule.
At least six civilians killed and several others injured as suicide bomber attacks meeting in Jalalabad.
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