One ISIS terrorist, Abu Anas Al-Libi, is suspected of brutally murdering 150 women in Iraq, most of whom were Yazidi.

According to Iraqi officials, Al-Libi killed these women, some of whom were pregnant and young teenagers, because they would not enter into fake, temporary weddings with Islamic State fighters so that they could have sex with them in what is believed to be a loophole in Koranic law.

“Abu Anas Al-Libi killed more than 150 women and girls, some of whom were pregnant after refusing to accept Jihad marriage,” the Iraqi Ministry of Human Rights said in a statement.

These marriages are being forcibly coerced on captives in cities like Fallujah. The statement included the information that ISIS performed mass executions, then buried the dead in to massive graves in the Al-Zaghareed and Al-Saqlawiya areas. After this, ISIS turned a large mosque in Fallujah into a big prison where they held hundreds of men and women.

In a separate report released the Iraqi Ministry of Human Rights said that ISIS dispensed a pamphlet in mosques in Mosul and nearby towns on the topic of female prisoners and slaves.