Police are looking for an alleged serial pervert after an act of indecency was committed in front of a 15-year-old girl at Castle Hill yesterday.
The girl was walking along Yoorana place at about 6pm when a man in a blue utility pulled up alongside her and allegedly performed an indecent act.
"As the girl walked past the utility the man wound down the window and she saw the male occupant was naked and committing an act of indecency," a police statement said.
The man is described as white European, between 20 and 30 years of age, of fair complexion with short brown hair.
It is believed he may have been responsible for a string of similar incidents since August.