Myko Coker, 18, was charged with grand theft auto and impersonating a law enforcement officer following the Tuesday incident, The Miami Herald reported Wednesday.

The Sunrise, Fla., Police Department said an officer found the teenager and a passenger in the car after responding to reports of an unmarked police car making traffic stops in the area. The department said Coker was wearing a sheriff's office T-shirt and identified himself as a deputy on his way home, giving the officer his father's name. The officer let the teen go, but pulled the car over a second time after seeing it a few minutes later with its emergency lights on.

Police spokesman Capt. Robert Voss said the officer became suspicious when Coker failed to produce a badge.

''He went to the deputy's house that was being impersonated, knocked on the door and asked him where was his car,'' Voss said. 'He looked outside and said `Uh oh, where's my car?'"

Coker was being held at Broward County's main jail.