Peel police say they have arrested a man who posed as an officer in an alleged sex assault.

On Monday, a man and a woman were sitting in a car at Erindale Park located in the Dundas Street West and Mississauga Road area. A man approached them and identified himself as a police officer.

He wasn’t wearing a uniform and didn’t provide any ID. He ordered the man out of the vehicle and got into the vehicle himself and then sexually assaulted the woman.

Fredy Fonseca Castadeda, of Mississauga, was arrested Wednesday and was charged with sexual assault, and impersonating a peace officer

Castadeda will appear in court on Oct. 1.

Police are concerned there may be more victims and are asking anyone with information to come forward.

If you can help, call the Special Victims Unit, at (905) 453-2121, ext. 3460 or Peel Crime Stoppers at 1-800-222-TIPS (8477) to remain anonymous.