A mass grave containing about 100 decapitated bodies has been found south of Mosul, Iraq's military said in a statement Monday.

The mass grave was discovered by Iraqi forces in the School of Agriculture on the outskirts of Hammam al-Alil, a town recaptured from the Islamic State on Monday, Iraq's Joint Military Command said, according to CNN.

"Gangs of ISIS militants continue to commit crimes against our people," the statement said, CNN reported.

A forensics team from Baghdad will investigate the grave site Tuesday, the Associated Press reported. Brig. Gen. Yahya Rasool, spokesman for the Joint Military Command, said the state of the remains made it hard to tell by their clothes if they were soldiers or civilians.