The 24-year-old singer was performing his song “We Don’t Talk Anymore,” which features vocals by Selena Gomez on the album, when he shouted “f**k you Justin Bieber” right before the chorus.
Charlie reportedly apologized for the comment after the show on his Twitter, saying, “What I said at the concert last night about Justin was meant to be a joke.”
He added, in the now-deleted tweets, “However…That way it was said mid song did not sound like one. I am a massive @JustinBieber fan and I have nothing but great things to say about him and his music always.”
Watch it go down in the video below…