There are fears the horrific attacks on two men who were set on fire while leaving mosques could trigger a sick social media craze.
Footage of the latest attack on Monday night shows an elderly Muslim man engulfed in flames while his attacker casually walks away.
As the assailant crosses Shenstone Road, in Edgbaston, Birmingham, he appears to point something – possibly a phone – in the direction of the victim.
Counter Terrorism Police are investigating links to an identical attack outside a mosque in Ealing, West London, on February 27.
In both cases, the elderly victims were sprayed with a flammable substance before the attacker set them alight.
The latest victim had just attended prayers at Dudley Road Mosque and was walking home when he was attacked at around 7pm.
Locals living in the areas say they fear copycat attacks.