At least 40 people are reported to have been killed by Islamist militants
in the north-east Nigeria town of Monguno.
A local official told a BBC reporter in Abuja that they had been
slaughtered; another resident said they were shot.
The killings are said to have happened two days ago, but details are only
Monguno, in Borno state, had been overrun and occupied by Boko Haram
fighters until they were recently driven out by the Nigerian military.
At least 23 people died in the town last month after a confiscated Boko
Haram bomb exploded during celebrations to mark the successful
military operation against the Islamist group.
Eyewitnesses to the latest killings say an unknown number of injured
survivors have been rushed to hospital.
The Nigerian army is also reportedly carrying out a rescue mission to the
Despite losing territory in north-eastern Nigeria this year, Boko Haram
still controls a few areas.
According to Amnesty International, at least 17,000 people, mostly
civilians, have been killed since the group launched their violent uprising
to impose Islamic rule in 2009.
The group is still holding many women, girls and children captive,
including 219 schoolgirls it kidnapped from a school in Chibok in April