This is the disturbing moment a child soldier fighting for ISIS was captured by rebels in northern Syria.

The boy, who barely looks old enough to be a teenager, was filmed lying face-down in the dirt after a surprise ISIS attack on the village of al-Khuwain, near Idlib.

In the footage the boy is completely calm as he tells the anti-Assad rebels who captured him that he has been with ISIS for two years, and fought in Raqqa.

A child soldier fighting for ISIS was captured by Free Syrian Army rebels in the northern province of Idlib on Monday after a failed attack on their position

The boy does not even flinch as a rebel fighter approaches him from behind with his weapon hanging by his side.

'Are you going to shoot me?' He asks, according to a translation posted on Twitter by the BBC's Riam Dalati.

'Shoot him,' comes the response from one of the fighters before the video stops.

It is not known what became of the boy, though more footage that appeared on the Twitter account Northern Stork shows what appears to be the same boy alive and riding in the back of a truck with other prisoners.

It is unclear whether that video was shot before or after the boy was recorded laying on the floor.

In the footage the boy remain completely calm, even while asking his captors if he is going to be shot. He also says he has been fighting for two years

A second piece of footage shows what appears to be the same boy riding in a truck alongside other ISIS prisoners

The boy is believed to have been captured by the Free Syrian Army, which was formed in 2011 by a group of former Assad generals with the aim of toppling the dictator.

The Turkish-backed rebels are currently working with forces deployed by Recep Tayyip Erdoğan in northern Syria to recapture villages seized by Kurdish troops.

Around 25,000 FSA troops were committed to the operation against the YPG, who were backed by the US as part of the Syrian Democratic Forces, earlier this year.

'The task of the Free Syrian Army is first to regain sixteen Arab towns and villages occupied by the foreign militias (YPG) with the help of the Russian air force,' Major Yasser Abdul Rahim told Reuters.

Forces loyal to Bashar al-Assad drove a pocket of ISIS resistance out of northern Hama province last week, allowing the fighters to move north toward Idlib, according to the Qasioun News Agency.

It was there that they launched a surprise attack on the FSA on Monday morning, leading to the child being captured.

Free Syrian Army rebels, who formed in 2011 with the goal of overthrowing Bashar al-Assad, have been fighting alongside Turkish forces in Idlib to recapture territory from the Kurds