The masked ISIS executioner, who has appeared on scores of beheading videos, was reportedly interviewed by a TV news channel following the 2011 London riots.
Intelligence agencies, following the first ISIS beheading of American citizen James Foley, inconclusively identified a London rapper identified as Abdel Majed Abdel Bary as ISIS executioner Jihadi John.
The footage of Jihadi John participating in a TV news channel interview was released by Australia's Channel Nine. In the video, the ISIS militant believed-to be Jihadi John is seen lambasting the police force.
"The police are protecting the police station," he tells the news reporter. "They're not protecting the people." In the footage, he is seems to be angry and continuously interrupts the TV reporter trying to interview other bystanders.
At one point, the ISIS militant believed-to-be Bary points to a nearby building and says: "They [the police] basically want to see it burn down so the damage can look massive. That's all it is."
The masked ISIS killer with the east London accent known as Jihadi John is believed to be responsible for beheading at least five Western hostages. The beheading video of Peter Kassig, his latest victim was posted on Sunday.
Bary, who used to be a rapper, abandoned his singing career after becoming increasingly radicalised. He is believed to be in Syria. He reportedly left his home in Maida Vale in west London earlier last year.
Earlier this year, he had posted a photograph on Twitter of himself holding up a decapitated head with the message "Chillin' with my homie or what's left of him."