Terrorist group Islamic State have used Justin Bieber’s Twitter hashtag in an attempt to infiltrate millions of teenagers around the world.

Bieber has 74 million followers on Twitter, more than three times the population of Australia. The ISIS strategy puts the Islamic State message in front of tens of millions of impressionable teenagers around the world.

The Twitter post read “Message To Islamic West’ and featured a 15 minute video with horrific and graphic images.