Police Finds Marijuana On Rihanna's Tour Bus

Rihanna encountered a slight 'speed bump' in her Diamond world tour on Wednesday when police allegedly found marijuana on one of her tour buses.

According to reports, the singer's tour bus was stopped by U.S. Border Patrol while making its way from Toronto, Canada to Detroit where the singer is expected to perform on Friday.

"During primary inspection a U.S. Customs and Border Protection (CBP) officer referred the buses for a secondary inspection due to the strong odour of marijuana emanating from one of the buses.

"A search of the individual resulted in the discovery of a small amount of marijuana and civil penalty assessed," Grogan said.

Grogan however stated that the individual was not the singer as she was not on the bus. The individual and the buses were later allowed to continue with their journey.