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May 2011: CSI star Marg Helgenberger hints at Bieber's bad behavior after the singer films a two-episode arc. "I shouldn't be saying this, but he was kind of a brat," Helgenberger says. "He was very nice to me, but he locked one of the producers in a closet, and he put his fist through a cake that was on the actors' table." Bieber is shown here accepting the Digital Artist of the Year award at the 2011 Billboard Music Awards May 22, 2011, in Las Vegas.
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May 2012: Bieber is involved in a scuffle with a paparazzo while leaving a mall with then-girlfriend Selena Gomez. The photographer files a police report, saying Bieber kicked and punched him, but because there is not sufficient evidence, including any apparent sign of injury, no criminal charges are filed.
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January and February 2013: Bieber moons fans on Instagram and shortly after, pictures surface of him and two friends surrounded by sizzurp and blunts. Sizzurp -- also known as purple drank, syrup and lean -- is a mix of codeine-based prescription cough syrup, soda and, often, Jolly Ranchers candy. He is shown here with Jimmy Kimmel on Kimmel's TV show Feb. 5, 2013.