On 10 June 2014, the Islamic State of Iraq and Syria (ISIS) killed at least 670 Shia prisoners in an attack on Badush prison. ISIS loaded 1,000 to 1,500 prisoners from the jail on to trucks and took them for screening. The group then separated Sunni inmates and began executing the remaining prisoners. This is just one of the many horrific crimes committed by the extreme group, northwest of Mosul.
The crimes committed at this site were only discovered after the Popular Mobilisation Units (PMU) took control of the prison on the 11th March 2017. The forces found a mass grave containing the remains of 500 prisoners executed by ISIS in the prison. According to reports, ISIS looted all tools and equipment in this prison that belonged to the Iraqi security.
The day after the June 10 massacre, ISIS gunmen carried out a similar mass killing of Shia soldiers in the city of Tikrit, 225 kilometers south of Badush. The group claimed to have executed 1,700 Shia troops in that killing and posted videos on the internet showing their gunmen shooting at hundreds of captive men. The group has systematically killed, abducted, and expelled Shia Muslims and religious and ethnic minorities during its military sweep through Iraq in 2014, and has forcibly married Yezidi women and girls to its militants.