Attacks by five suicide bombers on an Iraqi military base at the north of Baghdad on Sunday killed at least 15 security force members and wounded 22 others, security sources said.
Two of the bombers detonated their vehicle-borne explosives at the western gate of Camp Speicher, a former U.S. base outside the Sunni city of Tikrit.
Three others exploded themselves after entering the section of the base where Iraqi police are being trained, police and military sources in the Salahuddin operations command said.
IS has claimed responsibility for the blasts in a statement distributed by supporters online.
Iraq's Defense Ministry said IS has stepped up suicide blasts in response to setbacks in Ramadi. It said in a statement the group had used 22 bombers in two recent failed attacks in Anbar where Ramadi is located. The military responded, killing at least 42 militants including the bombers, the ministry said, according to Reuters. - Idrak