BAGA, Nigeria – Fighting between Nigeria’s military and Islamic extremists killed at least 185 people in a fishing community in the nation’s far northeast, officials said Sunday.

The attack saw insurgents fire rocket-propelled grenades and soldiers spray machine-gun fire into neighborhoods filled with civilians.

The fighting in Baga began Friday and lasted for hours, sending people fleeing into the arid scrublands surrounding the community on Lake Chad. By Sunday, when government officials finally felt safe enough to see the destruction, homes, businesses and vehicles were burned throughout the area.

The assault marks a significant escalation in the long-running insurgency Nigeria faces in its predominantly Muslim north, with Boko Haram extremists mounting a coordinated assault on soldiers using military-grade weaponry.