**At least six people have been killed in a suicide bombing in north-eastern Iraq, medical and security officials say.**The attack happened near a cafe in the town of Buhriz, which lies to the south of Baquba in restive Diyala province, reports said.
At least 10 other people were said to have been injured in the blast.
One of the dead was the local leader of a Sunni militia allied with the government, reports said.