A Cameroon governor says two suicide bombers hit a market in the north Cameroon village of Meme, killing at least 20 people, and two others targeted a school in a nearby town.

Far north governor Midjiyawa Bakari says 70 people were wounded Friday and have been taken to a hospital in the town of Tokombere, some in critical condition. He said the attackers disguised themselves as food vendors in the market.

A teacher at the government school in Tokombere, Mamoudou Gonit, said the attackers detonated their explosives in the bush about 1 mile from the school after they were identified.

Attacks across Nigeria's borders increased by Boko Haram extremists last year in countries, such as Cameroon, contributing to a multinational force to wipe out Boko Haram.