Los Angeles, Nov 30 (IANS) Singer Justin Bieber stopped by at a bar and grill outlet at the University of Southern California (USC) and bought drinks for a number of people.

Fans took to social media to share photographs and videos of the moment, with one person writing: “When @justinbieber buys you shots at the 9-0 #FightOn”. Another fan added: “@justinbieber went to the 9-0 at USC tonight after performing with @TheChainsmokers at The Shrine and I can’t even.”

Bieber stopped by the bar after making a surprise appearance at The Chainsmoker’s show on November 27 evening.

Meawhile, Bieber cancelled a series of performances, including an appearance on “The Late Show With Stephen Colbert”, without offering a proper explanation and took to his Twitter account to say sorry to those people who were hoping to see him.

“My apologies to @colbertlateshow as I won’t be able to make it to nyc for the show. I look forward to making it up to you soon (sic),” the “Baby” crooner tweeted.

Later, he thanked his fans for their understanding.

“@StephenAtHome thank you for the understanding as sometimes life kicks our a** and we need to deal with it. I will see u soon. Thank you,” he wrote.