Kills 31 security personnel

The group attacks a Nigerian military base and police station in the town of Buni Yadi, killing 17 soldiers and 14 police officers.  The gunmen arrive in an armored personnel carrier and six pickup trucks.  After dismounting and firing into the air, they fire rocket-propelled grenades at the base and station, reportedly telling people on the street not to flee because they have only come for the security force. They also destroy the high court and residence of the district’s head.