Officials in eastern Kenya say a grenade attack on a church Sunday has wounded at least eight people, some seriously.

The pastor of the Church in the town of Garissa is reported to be among the victims, along with several police officers. The attack took place at a church inside a police compound.

There has been no immediate claim of responsibility.

Militants have targeted Kenyans since the country's troops were deployed to Somalia to help fight al-Shabab rebels linked to al-Qaida. Two attacks at churches in Garissa in July killed nearly 20 people.

Authorities are investigating whether Sunday's attackers are linked to Somali militants.