At least 30 people were killed in a suicide attack in northeastern Nigeria, while watching a football match broadcast on television, officials said.
Another 40 were injured in the triple suicide bombing, according to the state emergency management agency.
The bombers detonated their explosives outside a hall in the village of Konduga, in the state of Borno.
The militant Islamic group Boko Haram is accused of the attack. Has not yet commented.
The group was formed in Borno State and since 2009 has conducted a brutal revolt across north-eastern Nigeria.
Ali Hassan, leader of a self-defense group in Konduga, told AFP news agency that the owner of the hall discussed with one of the bombers while trying to enter the room.
"It was a heated argument between the operator and the bomber who blew himself up," he said.
Two other strikers who were nearby then turned off their devices.
Konduga has been targeted first. In July 2018, eight people were killed after a suicide bomber detonated explosives in a mosque.
At least 27,000 lives have been killed and about two million people have been forced to flee their homes in the ten-year conflict.