McKnight: Bieber misbehaving 'to drum up interest'

Justin Bieber has been behaving like a bad boy to boost his career, R&B singer Brian McKnight has claimed.

The 19-year-old pop star has endured a turbulent last month, being arrested last week for driving under the influence (DUI), driving with an expired license and resisting arrest. He was also investigated by police for allegedly throwing eggs at his neighbour's house in Calabasas, California.