With a smooth voice, a signature mop of hair, and a string of hits, Justin Bieber has accumulated millions of fans till date, until he is caught in his string of bad boy acts.

The singer was caught up in controversy earlier this year when he was pictured allegedly smoking marijuana. And now Justin Bieber is involved in yet another scandal after drugs were found on a bus connected to his current tour at the Canadian border.

Law enforcement officials confirmed they seized both marijuana and drug paraphernalia on board the vehicle when it was stopped at the Ambassador Bridge, which separates Windsor, Canada and Detroit. Chief Customs and Border Protection Officer Ken Hammond told TMZ a sniffer dog detected the presence of the drugs on boardA search was then launched, which uncovered marijuana and drug paraphernalia. After were seized and the driver was issued a citation. The driver and passengers were subsequently released without further incident. Justin himself was not on the bus in question however.

The Ambassador Bridge checkpoint is becoming a hotspot for drugs busts, with Rihanna's tour bus also being pulled over for the same reason in March. During that incident a total of 10 buses from her ensemble were stopped at the checkpoint. Sniffer dogs were again deployed and one passenger was found to be in possession of cannabis, and he was cited with a civil penalty.

Like Bieber's incident, Rihanna was not on any of the buses.

Just one day after photographs surfaced of Justin Bieber reportedly smoking marijuana with friends in a hotel room in January, the singer has taken to Twitter to ask his fans for forgiveness.

He tweeted:

'I see all of u. I hear all of u. i never want to let any of you down. i love u. and..thank u. #beliebers'

This year the Grand Prix Season Singapore will begin on September 13 and go on till September 23.The Formula 1 Singtel Singapore Grand Prix is the only night race in the global FORMULA 1 circuit. Entertainment quotient takes center-stage with in-circuit performances by the likes of The Killers, Tom Jones, BigBang, and global superstars such as Rihanna and Justin Bieber.

We hope everything will go smoothly there or just get ready for another controversy.

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