Suicide bomb in central Iraq 'kills 37'

A suicide bomb attack in the central Iraqi city of Ramadi has killed 37 people, police and medical sources said.

Twenty-two security personnel and 15 civilians were killed when the bomber rammed an explosives-packed Humvee military vehicle into a construction site used by the army and police, the sources said.

Ramadi and its sister city Falluja have been plagued by fighting between the security forces and the extremist Islamic State and other armed groups since January.