|Boko Haram members staged an uprising in Maiduguri last year which led to deadly clashes with police [EPA]
A police station in the northern Nigerian city of Maiduguri has been destroyed in an attack blamed on the Boko Haram Islamic group.
The attackers, threw home-made bombs into the police station late on Monday, injuring at least two officers and two detainees, eyewitnesses said.
The wounded were being treated in a nearby hospital, Mohammed Hadi Zarewa, an assistant inspector general of police for the region, told reporters.
Boko Haram, which wants Islamic sharia law more widely applied across Africa's most populous nation, staged an uprising in Maiduguri last year, which led to clashes with security forces that left as many as 800 people killed.
Its members attacked symbols of government authority including prisons, police stations and schools.
Recent killings of police officers, traditional leaders and politicians in and around Maiduguri have raised fears that the group is staging a comeback.
It is thought to be responsible for the killing on Saturday of Sheikh Bashir Mustapha, an Islamic scholar, a day after he took part in a radio discussion programme in which he condemned the group.
Nigeria was shaken by car bomb attacks in the capital Abuja on the first of October, claimed by a rebel group in the oil-producing Niger Delta, hundreds of kilometres to the south.
It can ill-afford insecurity in the north as it prepares for a presidential election set to be the most fiercely contested since the end of military rule just over a decade ago.
Nigeria, a vast nation of more than 140 million people, is roughly equally divided between Christians and Muslims.
Boko Haram's views are not espoused by the vast majority of Nigeria's Muslim population, the largest in sub-Saharan Africa.