At least 65 people died in an attack by suspected Islamist extremists on a group returning from a funeral in Nigeria’s northeastern Borno region, state television reported on Sunday. It was one the deadliest attacks on civilians in the country in recent years.

There was no immediate claim of responsibility, but Boko Haram and a rival group, the Islamic State in West Africa, have often carried out attacks in the area.

The local government chairman, Mohammed Bulama, was quoted as saying on state television that the assailants killed 21 people returning from the funeral on Saturday and another 44 people when they tried to regroup to defend themselves.

Others were injured, he said, and the death toll may rise.

President Muhammadu Buhari condemned the attack and directed the military to hunt down the perpetrators.