Abu Omer appeared in numerous despicable propaganda videos where Iraqi citizens are killed with swords for trivial offences.
Images of him proceeding over a barbaric stoning were released by the sick terror group at the height of their powers.
In the most recent images of the elderly terrorist killer, he is seen after being captured by Iraqi forces.
His arrest has been confirmed by local media where he was pictured being taken to a police station.
Although the government in Iraq have announced the defeat of ISIS within their borders members of the hated group are still hiding throughout the country.
Some of the remaining fighters are continuing to carry out small raids against troops.
Omer oversaw the horrifying murders in the group’s former capital of Mosul.
The crimes his victims were accused of included homosexuality and blasphemy.
The news comes after Turkish warplanes and artillery obliterated 100 ISIS targets hours after a gunman from the terror group slaughtered 39 New Year’s Eve partygoers inside an Istanbul nightclub.
Aerial footage shows aircraft flattening Islamic State hideouts with missiles close to the towns of al-Bab, Tadif and Bazgah in the north of Syria.
Turkey’s military reported it had been successful in wiping out 22 of the group’s militants as part of its ongoing operation dubbed “Euphrates Shield”.
Huge explosion can be seen as Turkish forces devastated targets with the help of Russian forces on Monday.
The latest bombardment in the four-month campaign came as Turkish officials continued their manhunt for the nightclub killer.
A gunman dressed as Father Christmas stormed the Reina venue in Istanbul and opened fire on clubbers celebrating the start of 2018.
After shooting victims outside the nightclub, the attacker entered the club and started firing inside the building, on the banks of the Bosphorous waterway.
At least 39 people were killed in the sickening attack, with a further 69 injured.