Rihanna's entourage had a slight delay.
While making the drive from Canada to Detroit, Mich., for her Diamonds World Tour, one of a Rihanna's tour buses was stopped by U.S. Border Patrol after they got a whiff of what smelled like marijuana on someone.
And no, it wasn't Rihanna.
Kris Grogan of U.S. Customs and Border Protection tells E! News that "at approximately 9 a.m. this morning, a caravan of 10 charter buses claiming association with the singer Rihanna attempted to cross in Detroit at the Ambassador Bridge.
"During primary inspection a U.S. Customs and Border Protection (CBP) officer referred the buses for a secondary inspection due to the strong odor of marijuana emanating from one of the buses."
Grogan added that during the second inspection, a drug-sniffing dog alerted the presence of drugs on one of the passengers.
"A search of the individual resulted in the discovery of a small amount of marijuana and civil penalty assessed," he continued, and noted that the individual was not the singer (who was not even in the traveling party). The tour buses, along with the individual, were allowed to continue driving through to the States.
Rihanna performed in Toronto on Tuesday and has a show scheduled at the Joe Louis Arena in Detroit on Wednesday.
--Reporting by Holly Passalaqua