Border officials discover marijuana on Justin Bieber tour bus as it enters America from Canada

Justin Bieber appears suspended from the ceiling as an angel as part of his 'Believe' world tour (Getty Images)

Marijuana has been found on a tour bus belonging to "Baby" singer Justin Bieber as it crossed into America from Canada, according to Detroit Customs and Border Protection.

American border officials found marijuana on the tour bus as it crossed into the States from Windsor, Canada.

Customs and Border Protection spokesman Ken Hammond confirmed that the bus was stopped on Sunday as it attempted to enter the US on the Ambassador Bridge, according to the Detroit Free Press.

Bieber was not on the bus at the time and performed later that night at Joe Louis Arena as part of his Believe world tour.

Mr Hammond said a police dog alerted officials to the presence of drugs on board. Drug paraphernalia and a small amount of marijuana were found following a search.

The vehicle and its passengers were allowed to go.

In April Swedish police raided the singer’s tour bus in Stockholm and allegedly found a small amount of narcotics and a stun gun.