Suicide bombers have killed at least 10 people in Chibok, the Nigerian town where Boko Haram kidnapped more than 200 schoolgirls nearly two years ago.
Witnesses say one bomber detonated explosives Wednesday at a checkpoint where people were being searched, and at least two others blew themselves up in the town's market.
There were conflicting reports on whether the bombers were male or female.
There was no immediate claim of responsibility, but the attack bore the hallmarks of Boko Haram, which often targets public gathering spots such as bus stations or markets.
The Islamist radical group sparked international outrage in April 2014 when it abducted 276 teenage girls from a Chibok secondary school. Fifty-seven escaped, but more than 200 remain missing.