The authorities in Somalia’s semi-autonomous region of Puntland say the military has surrounded 250 fighters from the Islamist group al-Shabab.
Puntland’s Vice President Abdihakin Abdullahi Haji Omar Amey told BBC Somali that the militants were trapped in a valley, with no food to eat.
He said some had tried to escape but had been either killed or captured.
Al-Shabab has had bases in Puntland for several years.
Last year, a splinter group in the area declared allegiance to so-called Islamic state.
Most of al-Shabab is allied to al-Qaeda.