At least 18 people have been killed and 30 injured in a series of deadly explosions in Nigeria's northeastern Borno state, officials said.
One of the suspected bombings reportedly killed six people and injured others at a wedding on Saturday.
The state emergency management agency said suicide bombers attacked a wedding hall, a funeral parlour and a hospital in the town of Gwoza.
Borno state is the epicenter of the 15-year insurgency by the Boko Haram Islamist militant group, which has displaced more than two million people and killed more than 40,000.
Boko Haram gained international notoriety in 2014 when it kidnapped more than 270 schoolgirls from the town of Chibok in Borno state.
Authorities said 18 deaths were confirmed on Saturday, including children, adults and pregnant women.
Some local media reported even higher deaths. Nigeria's Vanguard and This Day newspapers reported that at least 30 people were killed in the explosion.
The military has issued a curfew.
No one has yet claimed responsibility for the attack.
Gwoza was captured by Boko Haram in 2014 and recaptured by the Nigerian army in 2015. However, the group has continued to carry out attacks and kidnappings around the town since then.
Last November, 20 people were killed by Boko Haram militants while returning from a funeral in neighbouring Yobe state.
Police said the attack came a day after militants stormed the village of Gurokayeya and killed 17 people. This was due to the villagers' refusal to pay the so-called harvest tax.
