After the Manchester Arena Bombing during Ariana Grande’s concert in 2017, concerts and events have been on high alert. So, when a teenager threatened to commit another terrorist attack at a Justin Bieber concert, the issue was NOT taken lightly. A month after the Manchester Arena terrorist attack, 17-year-old Lloyd Gunton was caught planning an Islamic-State inspired attack at yet another pop concert. This time, a Justin Bieber gig in Cardiff was the target. Luckily he was caught and imprisoned beforehand.