ABUJA: Fourteen people were killed and 39 others injured in devastating multiple blasts which rocked parts of Nigeria’s Maiduguri city, capital of the northeastern state of Borno late on Thursday, the army said on Friday.

Four explosions went off in Sajeri and Dalla areas of the restive northern state, acting spokesman of the Nigerian army Col Kukasheka Sani Usman said. Two explosions went off in each area.

Four Boko Haram suicide bombers carried out the attacks by detonating their vests, said the army spokesman, noting the fourth explosion occurred in front of a local mosque. A local hospital source told Xinhua that there might be a rise in the death toll, as some of the injured are currently in critical conditions.

The multiple explosions followed a more cheerful event, in which at least 80 Boko Haram insurgents surrendered to troops of the Nigerian army in Borno State. A statement by the Nigerian army said those who surrendered included Boko Haram commanders, suppliers of logistics and foot soldiers.