Teen sensation Justin Bieber upset two Maryland state troopers ahead of his concert on Sunday (05Sep10) after throwing water balloons at them.
A police spokesperson claims the Canadian was "horsing around with members of his staff" before his sold-out gig at the Maryland State Fair, and hurled the balloons, filled with water, at two officers who were controlling the crowds.
One of the balloons hit a cop's gun belt and burst, while another balloon bounced off the other trooper.
The officers decided not to write up a report but the police representative has deemed the Baby hitmaker's actions "inappropriate behaviour".