Baghdad:The Daesh Takfiri terrorist group has tortured and executed 25 people by nitric acid in Iraq’s embattled northern city of Mosul in Nineveh Province.

The Arabic-language al-Sumaria news website quoted an informed source as saying that the terrorists killed the people for cooperating with and spying for the Iraqi security forces.

The source, who spoke on condition of anonymity, said Daesh terrorists tied the people with rope and put them in a large basin containing nitric acid.

The source further added that the execution was performed in public to scare other people.

On May 13, Daesh terrorists also executed 11 residents of Mosul on charges of using mobile phones.

Daesh terrorists burned the entire five members of an Iraqi family alive in Kirkuk city on May 10 after accusing them of trying to escape terrorist-held territories.

In late April, Daesh members also executed 250 women in Mosul after the victims did not accept a proposal to temporarily marry the militants.

Earlier this month, United Nations Special Representative for Iraq and Head of the United Nations Assistance Mission for Iraq (UNAMI) Jan Kubis told the UN Security Council that over the recent months, more than 50 mass graves have been found in various parts of Iraq that were previously controlled by Daesh.

The militants have been committing heinous crimes against all ethnic and religious communities in Iraq, including Shias, Sunnis, Kurds, Christians and others.