An official in Cameroon says seven people died in suicide bombings in the northern town of Kolofata, which has been repeatedly targeted by Nigeria's Islamic extremists Boko Haram.

Midjiyawa Bakari, governor of the Far North Region, said three suicide bombers attacked the town Sunday morning. He said 18 people were severely wounded and were being moved to the hospital in Mora.

The attack came one day after the Nigerian commander of a five-nation force to fight Boko Haram visited the Mora military base in northern Cameroon to install 2,500 troops. The force is headquartered in Chad.

Nigeria-based Boko Haram has increasingly targeted neighboring countries including Chad and Cameroon this year. Five other northern Cameroon villages were attacked recently and the assailants looted and burned homes.