Boko Haram stepped up attacks on remote villages in the northeast.
Dozens of the group's gunmen raided the town of Rann in Borno state on the border with Cameroon on Friday, meeting fierce resistance, residents said.
Before retreating the group's fighters hurled explosives into the police station, setting it ablaze, and bombed a local administrative building and a government lodge, they said, adding that no casualties were recorded.
"They came into town around 6pm and made straight for the police station where they opened fire and the police responded, resulting in a shootout that lasted for one hour," resident Bunu Faltaye told AFP.
Then early on Saturday the attackers went to Sigal village seven kilometres away and abducted a police officer from his house, said Timothy Musa, another resident.
"We have no idea where they are holding him and we fear for his life," Musa said.
Also on Wednesday, bombings in which 42 people died in north-central Kaduna were blamed on Boko Haram. The presumed targets of the attacks, a prominent imam and a former head of state, escaped with their lives.
