New Delhi: According to the Security agencies, four Indians could be among the 20 ISIS fighters who were reportedly beheaded in full public view for trying to flee a war zone in Iraq's Mosul city.

However, there is no confirmation yet about the killing of four Indians, official sources said.

The Indian Intelligence Agency reports a total of 23 Indians joining the ISIS, out of whom, six were killed in different incidents in Iraq-Syria.

Agencies were verifying the reports through different sources and trying to ascertain where there were Indians among those beheaded, the sources said.

Sending out a chilling warning to others in the terror group against desertion, the Islamic State of Iraq and Syria(ISIS) captured a group of its own militants who tried to escape the battlefront in Mosul city of Nineveh province, and executed them in public, reporters quoting a local source citing an ISIS "official" said.

"The dissidents were arrested at a checkpoint in the vicinity of Mosul on Friday. After being identified as fighters who have left their positions at the fighting front in western Mosul, they were transferred to the Sharia Court for prosecution," reporters said.

"Subsequent to a brief interrogation, the Sharia Court decided to behead the dissidents on charges of treason," it said.

Observers said the beheadings were made in a bid to terrorise ISIS members who may leave their posts in the war-torn region.

The jihadis were beheaded in central Mosul in front of hundreds of people, mostly ISIS members and commanders, the report said.

"Witnessing the brutal punishment has caused a state of panic among the members of the group", reporters said.

ISIS considers jihadis who leave their posts without permission as traitors and enemies of its so-called Caliphate. (Inputs from Agencies)