The terrorist group ISIS has just released a graphic propaganda video that shows five prisoners being murdered by locking them into a metal cage and lowering them into a swimming pool.

Images from the video can be seen via SITE's (Search for International Terrorist Entities) Twitter account.

The terrorist tracking institute's initial Tweet described the video as showing the group "executing spies by drowning in a cage, shooting a car in which they sat with an RPG, and beheading by explosive."

The seven-minute video uses underwater cameras to capture the terrified men as they sink to their demise, and appears to have been shot at the ISIS stronghold of Mosul in Ninawa province.

When the cage is lifted, the men, who were ostensibly accused of spying, are shown foaming at the mouth, lying dead atop one another.

The terror displayed on the video is not isolated to drowning as another part shows ISIS militants killing prisoners by locking them in a car and shooting at them with a grenade launcher. Further footage shows explosives being placed around the necks of prisoners.

Yesterday, it was announced that a U.S.-led airstrike killed a man from Tunisia named Ali Awni al-Harzi, an ISIS operative who was a known person of interest in the 2012 Benghazi attack.

As reported by the Daily Mail, Pentagon spokesman Colonel Steve Warren said that the ISIS operative was killed on June 15, saying: “His death degrades ISIL's ability to integrate North African jihadists into the Syrian and Iraqi fight and removes a jihadist with long ties to international terrorism.”

As the Muslim holiday Ramadan begins, Isis made further news by initiating a contest called a "sibya,” in which female slaves that have been captured in war are given away as prizes to operatives that have shown their mastery of the Koran.

As reported by Fox News, the morale building contest was organized by the Da'wa and Mosques Department in the Al-Baraka province of Syria.