JALALABAD, Afghanistan, Feb. 3 (Xinhua) -- At least 13 militants loyal to the Islamic State (IS) group were killed in government forces' operations in eastern Afghanistan, a government spokesman said Saturday.

The government forces stormed the militant group's hideouts in Achin and Haska Mina districts of the Nangarhar province on Friday, spokesman for the provincial government Attaullah Khogiani said.

The government forces-backed aircraft targeted the hideouts of the IS group in Achin district on Friday afternoon, killing nine insurgents on the spot.

Similarly, the government forces in operations against the hardliner outfit in the neighboring Haska Mina district on the same day left four more fighters dead.

Several more insurgents sustained injuries during the raids, the official asserted.

Militants loyal to the IS are yet to make comments.