The 4th - century Mar Behnam Monastery was seized by ISIL , which forced its monks to leave without taking anything with them .
10 June : ISIL killed 670 Shia inmates of Badush prison in Mosul .
The 4th - century Mar Behnam Monastery was seized by ISIL , which forced ISIL 's monks to leave without taking anything with them .
10 June : ISIL killed 670 Shia inmates of Badush prison in Mosul .