Niger’s parliament has voted to send troops to Nigeria to join the fight against militant Islamist group Boko Haram.

The vote took place after Boko Haram attacked a prison and detonated a car bomb on Monday in the town of Diffa, near Niger’s border with Nigeria.

MPs said parliament unanimously authorised deploying 750 soldiers with a regional force battling Boko Haram.

The Boko Haram has increasingly drawn in Nigeria’s neighbours.

On Saturday Nigeria, Cameroon, Chad, Niger and Benin agreed to establish a 7,800-strong force to fight the group.

Boko Haram launched its first attacks in Niger last week, and has vowed to create an Islamic state.

Niger’s President Mahamadou Issoufou, a Muslim, vowed to defeat Boko Haram.