Boko Haram insurgents have killed at a military formation at Mandara-Girau, in Biu local government area of Borno State.

Mandara-Girau is located a few kilometers away from Biu town.

Security sources revealed that the attackers stormed the military location in the early hours of Friday and opened fire on the troops, amidst heavy rainfall.

He said the terrorists who came in very large numbers took the troops unawares and caused heavy casualties.

“They killed nine soldiers and injured several others, and they were all beheaded,” he said.

He said that part of the formation was overrun by the suspected Boko Haram terrorists.

In a 1 minute, 38 seconds video clip obtained by this reporter, corpses of eight soldiers were seen covered with blankets on the ground.

The military is yet to issue an official statement on the matter.

(Daily Trust)