At least 10 people were killed when two female suicide bombers blew themselves on Wednesday at a mosque in Kouyape Kolofata in northern Cameroon.
Conflicting reports from senior officials peg the death toll between 10 and 13. One person was wounded in the incident outside the mosque.
Cameroon, Chad and Nigeria have lately been facing a number of suicide attacks by Boko Haram, a militant group which originated in Nigeria and has links to the Islamic State of Iraq and Syria (ISIS).
Boko Haram, like Isis, wants to establish an Islamic republic in the African countries.
To discourage female suicide bombers, governments in Cameroon and Chad had recently legislated a ban on full-cover hijabs while Nigeria is still mulling the proposal.
Cameroon is set to be a part of the combined offensive against Boko Haram. The offensive will be led by Nigeria and the US will assist with military supplies and troops, Reuters reported.