PESHAWAR: At least two suspected militants, belonging to the self-styled Islamic State militant group, were killed on Friday in a US drone strike in Achin district of Afghanistan's Nangarhar province.

Security sources said the drone targeted a militant compound with two missiles in the Achin district.

There have been fears of the Middle Eastern group, also known by its Arabic acronym Daesh, making inroads in Afghanistan since US-led Nato forces ended their combat mission after fighting local militants Taliban for 13 years but the issue made headlines when in June last year, Afghan Taliban wrote a letter to IS chief Abu Bakr al-Baghdadi warning him against waging a parallel insurgency in the country.

The Taliban insisted that “jihad (holy war) against the Americans and their allies must be conducted under one flag and one leadership”. The letter was published on the Taliban website in Pashto, Urdu, Arabic and Dari.