A suicide bombing attack killed at least 20 people in Cameroon near the Nigerian border on Friday.
One official based in northern Cameroon said two men blew themselves up in a market in the city of Mora, adding that the number of casualties may rise.
The attack occurred at around 0900 GMT, said the governor of Cameroon’s Far North Region Mindjiyawa Bakary.
Although no group has claimed responsibility for the attack, Cameroonian officials have accused Nigeria-based militant group Boko Haram - which has caused about 1,000 deaths in Cameroon - of being responsible.
According to the United Nations and Amnesty International, Boko Haram has killed more than 20,000 people and displaced 2.5 million in the region during its six-year insurgency.
On Tuesday Cameroonian special forces soldiers killed 162 Boko Haram militants in the northeastern Nigerian town of Goshi during an aeffort to retake the group's stronghold there, the government said.
Cameroon has increased its military presence along its border with Nigeria to push the militant group back with the support of locals. The United States has also sent troops to supply intelligence and other assistance against the group.