"Eight people were killed, including five fighters from the tribal militia; 16 people received injuries, most of them being militiamen, in an explosion at a mined school in the village of Majarin, west of Mosul," the source said.
The broadcaster Rudaw reported that 15 had died and 23 were injured in the blast. According to the news outlet, some of the victims were inside houses near the school when the bomb went off.
Mosul, Iraq's second largest city, was seized by the terrorist group Daesh (ISIS) in 2014. After months of brutal fighting, the Iraqi army managed to liberate the city from the jihadists, with Baghdad announcing the victory over Daesh in Mosul on July 10.