A British teenager dubbed "Osama Bin Bieber" is believed to be fighting with fanatical terrorists in Syria.
Mohammed Hadi, 18, from Coventry, was believed to have joined ISIL, an increasingly powerful Islamic militant group fighting in both Syira and Iraq, the Daily Mail reported.
The youngster, of Iraqi Kurdish descent, was said to have been radicalised by extremist clerics at a madrassa (religious school) in Coventry and travelled to the Middle East with three other men.
He was known as "Osama Bin Bieber" after the Canadian pop star because his youthful, baby-faced appearance.
He has posted pictures of himself on Instagram holding guns, and posted tweets claiming to be in Syria with "Dawla", another name for ISIL.
His parents reported him missing to police back in March.
The Sun On Sunday spoke to Mahir Hadi, 38, the father of the teenager.
"We can't talk about it - I don't know anything about it," he said.
"The police know better than me."
Twitter users have reported Hadi, also known as Abu Yahya Al Kurdy, was near the northern Syrian town of Sarrin earlier this month, with a group of Chechens.
Reso Bistuyek posted: 'Abu Yahya Al Kurdy (also known as Osama Bin Bieber) hangs out w/ Chechens of the Jarablus/Sarrin crowd'.
Verified: "Abu Yahya Al Kurdy" (also known as Osama Bin Bieber) hangs out w/ Chechens of the Jarablus/Sarrin crowd. pic.twitter.com/GsWOX9phnE
— Reşo Bîstûyek (@r3sho) June 6, 2014
A Coventry local said he saw the teenager's father in tears after discovering what he had done.
"He was so frightened that he would die out there and was furious..."
An imam at the madrassa said Hadi did attend but when he discovered his plans to travel to the strife-hit region he called West Midlands Police.
A spokesman for police said it was investigating his whereabouts.
The news about Hadi comes soon after two Britons and an Australian were seen in an ISIL recruitment video urging other British Islamists to join their ''holy war''.
Police across the UK have made 65 Syria-related arrests over the last 18 months, including 40 in the first three months of this year alone.
Over the weekend it was revealed about 500 Britons had travelled to Syria and Iraq to fight.
Cressida Dick, the Metropolitan Police's assistant commissioner and head of specialist operations, warned that Britain would feel the long-term consequences of the conflict for "many years to come".
She said it represented a terrorist threat to the UK, and that young British Muslims who have travelled to the war-torn country to fight might commit violence when they return.