Abuja: In multiple explosions and attacks by a radical Muslim sect at least 11 people were killed in Nigeria’s restive northeast, said police on Tuesday.

The suspected members of Boko Haram Islamic sect, who wants to impose Sharia or Islamic law across Nigeria, targeted a fire service headquarters, three police stations and a church in the city of Maiduguri on Tuesday.

Borno State police Chief Mohammed Abubakar confirmed the attacks by the sect members and put the death toll at 11.

He said three suspected members of the sect and a soldier were also killed in the attacks.

The attacks came a day after a member of a rival sect, Sheik Ibrahim Birkuti who spoke against the activities of Boko Haram was shot dead by the suspected members of the group.

Nigeria, a nation of 150 million people, is divided between the Christian-dominated south and the Muslim north. A dozen states across Nigeria's north already have Shariah law in place, though the area remains under the control of secular state governments.

Boko Haram is responsible for a rash of killings which have targeted police officers, soldiers, politicians and clerics in Nigeria's north over the last year.

Maiduguri has been the most volatile since 2009 when the sect confronted the police leading to the death of more than 800 people.