Jihadi John's little brother who 'was a member of so-called Muslim Mafia

The 21-year-old - whose older brother Mohammed was exposed as the infamous ISIS killer last week - is said to have supported Sheikh Khalid Yasin, who was lauded by Lee Rigby killer Michael Adebowale.

Omar had lived with Mohammed, 26, and both went to school together at Quintin Kynaston Academy in north west London, which was also attended by another ISIS member, Choukri Ellekhlifi.

Omar is said to have quickly taken down his Facebook page after his brother's new identity was revealed last week.

He reportedly used the site to 'like' Sheikh Yasin, a preacher who has called the Taliban his 'brothers' and denounced both Christian and Jewish beliefs as 'filth'.

Yasin has also claimed that the Koran gives men permission to 'beat women lightly' and has called homosexuality an 'aberration' that should be 'punishable by death'.

Michael Adebowale - who was jailed last year for the murder of Fusilier Lee Rigby - said Yasin's views taught him the 'purpose of life' and convinced him to convert to Islam.

Omar is believed to be being questioned in Kuwait, the home country of his father, Jassem, over Mohammed's involvement with ISIS, after they recently returned to the country from their house in west London.

A schoolfriend of Omar has said he was part of a group dubbed 'the Muslim Mafia' at Quintin Kynaston because of their devout religious views.

The unnamed woman told Victoria Ward of The Daily Telegraph: 'He was very religious but in an unobtrusive way.

'In every year there was a set that was the Muslim Mafia that hung out together and were very religious.'

The former schoolfriend insisted Omar was too much of a 'wimp' to be an extremist.

(dailymail.co.uk)