Boko Haram insurgents have killed 41 pupils in an attack on a school in Nigeria's Yobe state.
Suspected Islamist extremists have stormed a mosque and shot dead 44 worshippers and 12 others in a nearby village in Nigeria, say officials.
Nigeria's military has enforced a round-the-clock curfew in parts of the north-eastern city of Maiduguri, the home base of Boko Haram.
A construction company has evacuated its staff from a Nigeria site after gunmen blasted into the facility and kidnapped seven foreigners.
Islamist group Boko Haram have been accused of being suspects in the latest attacks on government buildings in the north of Nigeria.
Boko Haram has killed hundreds in attacks that authorities have been unable to stop, prompting calls for talks to bring an end to the bloodshed.
Eight people have been killed in Nigeria's north and a mob has torched an Islamic school in the south amid a fuel strike and rising religious tension.
Hundreds of people have fled their homes in northeast Nigeria in fear, following deadly all-night gun battles between Islamists and security forces.
Gunmen have attacked a police station in Nigeria, killing a teenager and wounding an officer in the first such incident during its state of emergency.
The US has warned of fresh attacks in Nigeria after a wave of deadly bombings claimed by Islamists Boko Haram killed 150 people in the country.