Four suicide bombers have attacked a town in Cameroon's Far North region near the border with Nigeria, killing at least 28 people and wounding 65 others, officials said.
Two attackers detonated explosives at a market and two others blew themselves up in the town of Bodo, governor Midjiyawa Bakari said.
The attackers came from Nigeria, Mr Bakari said, adding that the wounded are in hospital.
Cameroon troop commander General Jacob Kodji confirmed the attack and said Nigeria's Islamic extremist group Boko Haram is suspected.
Soldiers have been deployed to the area, he said.
The Islamic militants, who have killed thousands in a six-year insurgency, began stepping up attacks early last year on neighbouring Cameroon and other countries contributing in efforts to crush Boko Haram.
"We have information the four bombers came from Nigeria. We are investigating where they spent the night before attacking the market," said Mr Bakari.
Gen Kodji said some accomplices may still be in hiding.
"We have deployed soldiers to the area to assist the local defence group because we are informed a few fighters may have escorted them (the bombers) to Cameroon from Nigeria," he said.
Suicide bombers are suspected to be crossing the border from Nigeria to stage their attacks, killing dozens in the region in the last month, officials said.