MAIDUGURI, Nigeria (AP) — Coordinated attacks by Islamic extremists armed with heavy machine guns killed at least 42 people in northeast Nigeria, authorities said Tuesday, the latest in a string of increasingly bloody attacks threatening peace in Africa’s most populous nation.

The attack struck multiple locations in the hard-hit town of Bama in Nigeria’s Borno state, where shootings and bombings have continued unstopped since an insurgency began there in 2010. Fighters raided a federal prison during their assault as well, freeing 105 inmates in another mass prison break to hit the country, officials said.