Midjiyawa Bakari said today the attack happened in the town of Kolofata on Cameroon's border with Nigeria. Bakari said the bombers are believed to have come from Nigeria, crossing over a few days ago.
Kolofata has been repeatedly attacked by Boko Haram militants. The extremist group's six-year insurgency has killed thousands in Nigeria, and across its borders.
Cameroon is one of five countries contributing troops to a regional force intended to wipe out Boko Haram, which became an affiliate of the Islamic State group last year.