The 28-year-old recently posted a photograph of a kitten curled up inside a suicide explosives belt. Alongside it he wrote 'Come closer and I'll blow the entire house down!' Another picture featured a cat called Bint Lucy snuggled up against a hand grenade.

Separately Hussain, a former security guard at Morrisons supermarket in High Wycombe, south-east England, posted a message on hating the 'kuffar', or non-believers.

He has been spreading propaganda on the encrypted Telegram app after having his Twitter and Tumblr accounts repeatedly suspended. By Friday his posts were being followed and read by almost 800 extremists, the newspaper found.