A prolific British ISIS recruiter is using an encrypted messaging app to groom youngsters into joining him in Raqqa.

Omar Hussein, who used to work as a security guard at Morrisons' supermarket in Buckinghamshire, has posted sick pictures of his cat napping in a bomb belt and beside a grenade.

The grey cat, who has been named Lucy, is pictured curled up inside a black belt, eyes open and looking directly at the camera.

Scroll down for video

Sickening: British jihadi Omar Hussein, 28, posts pictures of his cat 'Lucy' sitting inside a suicide belt. Underneath the picture he writes, 'Come closer and I'll blow the entire house down!'

Shocking: Also known as Abu Awlaki, Hussein posted a second picture of a grenade next to his sleeping pet

Underneath the picture he writes, 'Come closer and I'll blow the entire house down!'

In a second picture, he has placed a grenade next to the sleeping cat.

His latest public posts on encrypted messaging application Telegram are of trees in a park and he has previously photographed shops selling children's toy shops and women's shoes.

Interspersed between the propaganda shots, are the British jihadi's blog articles and advice for people wanting to join the Islamic State.

He has also linked to a disturbing report that instructs fanatics on 'safety and security' for carrying out lone wolf attacks.

Mocked: The British jihadi mainly seems to be sat at his computer and not on the battlefield

Hussein, 28, who was been linked to a man convicted of a plan to behead someone on Remembrance Day, has shared numerous photos of his life in Raqqa.

In one article entitled 'Hating the Kuffar', which concerns non-muslims, he says that even if they are kind, they must be hated because liking them is 'selfish'.

'Yes, this is in our religion; loving the Muslims and hating the kuffār. Islam is not a religion of peace (alone), it’s a religion of peace, war, love and hate,' he writes.

'So the ‘kind’ neighbour, the colleague at work, your boss, your son’s school teacher, the postman, the bus driver, the cashier at the supermarket, that random woman who takes her dog out for a walk every morning to the park… all such people must be hated.

'Their profession or their status in society has no role to play nor does it effect anything.

'A kāfir is a kāfir, period.'

He also lists a female recruiter for 'sisters' who want to travel to Syria.

Despite Telegram shutting down 78 ISIS related accounts in the aftermath of the Paris attacks, recruiters are still using the app to groom youngsters and spread ISIS propaganda.