At least 30 people were killed in a suicide bombing in northeastern Nigeria while watching a TV football match, officials say.
Another 40 were injured in triple suicide, according to the State Agency for Emergency Management.
The bombers blew their explosives out of a hall in the village of Conduga in Borneo.
The militant Islamic group Boko Haram is blamed for the attack. He has not commented yet.
The group is formed in the Borno State and since 2009 has led a brutal rebellion in northeastern Nigeria. the room was challenged by one of the bombers as he tried to enter the hall.
"There was a heated dispute between the operator and the bomber who exploded," he said.
Two other attackers who were nearby, then released their devices.
Konduta was targeted before. In July 201