Afghanistan's intelligence service says the second-highest figure among militants loyal to the Islamic State group in the country was killed in an airstrike.

Abdul Hassib Sediqi , spokesman for the National Security Directorate, said Tuesday that Gul Zaman and six other militants were killed in a strike the day earlier in the Achin district of the eastern province of Nangarhar. He would not say who carried out the strike.

The government says IS, rooted in Iraq and Syria, is making inroads into Afghanistan and is active in at least three provinces. The Taliban, at war with the government for nearly 14 years, have warned the IS group to stay out. Both groups want Islamic rule but the Taliban do not recognize the IS group's self-styled caliphate.