The death toll in a double suicide bombing on Thursday in the northern Cameroon town of Kerawa has risen to 19 dead and 143 wounded, a senior local government official said.
One bomb went off near an army camp in the Far North region and another hit a market.
Cameroon is part of a regional coalition fighting Islamic militant group Boko Haram, which has waged an insurgency in northern Nigeria for six years and
attacked neighbouring states.
The attacks targeted Kerawa, a town in the Far North region that was the scene of clashes between Boko Haram militants and government soldiers in February.
The first bomb exploded in the morning in the market in Kerawa and the other soon after near a camp housing infantry soldiers stationed in the north to fight the Nigerian Islamist group.
Another local government official said he had been told that the attacks were carried out by female bombers.
Boko Haram has stepped up attacks on the countries bordering its northeast Nigerian stronghold — Chad, Niger and Cameroon — after they took part in a regional offensive against it earlier this year.
The Islamist fighters were blamed for a series of suicide bombings in the town of Maroua, also in the Far North, that killed dozens of people in July.
Cameroon has deployed thousands of troop to its northern border where militants carry out regular raids, killing some villagers and kidnapping others.