The dark-colored SUV pulled up, emergency red and blue lights flashing from the dashboard. The driver pulled over - and was robbed.
The real St. Louis police continue to search for the fake ones - two men who pulled off three robberies on Tuesday, each time after posing as officers.
In each case, a sport utility vehicle that looked like an undercover police vehicle pulled behind cars and turned on flashing lights from the dashboard. Motorists, believing they were being stopped by police, pulled to the curb.