Mohammad Khamis Abu Risha was touring a checkpoint manned by his fighters in Ramadi when a suicide bomber hugged him, said one of his men.
Four of Abu Risha's bodyguards were killed in the blast, the source added, Al-Manar reported.
"He used to routinely visit us to give us directions and duties.... Tonight we were waiting for him at our checkpoint," said the militant, who asked not to be identified for security reasons. "But we suddenly heard an explosion in the preceding checkpoint. We rushed to the scene and he was killed. His body was mutilated beyond recognition."