The raids on eight to 10 police posts began early today, Haji Ghalib, governor of Achin district in Nangarhar province, told AFP, giving no casualty figures.
"This is the first time that Daesh fighters have launched coordinated attacks on police checkpoints in Nangarhar," he said.
Daesh is an Arabic acronym for the Islamic State (IS) group, which controls wide swathes of territory in Iraq and Syria.
The attacks in Achin were confirmed by the border police commander in eastern Afghanistan, Mohammad Ayoub Hussainkhail.
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