An arrest has been made in a sexual assault investigation in Mississauga. Peel Police say on August 27th, around 9:30 pm, a woman and her male companion were sitting in a parked vehicle at Erindale Park, near Dundas Street West and Mississauga Road. A man approached the vehicle, identified himself as a police officer and told the male to get out of the vehicle. The suspect then got in and proceeded to sexually assault the woman. 27 year old Fredy Fonesca Castandeda is charged. Police are concerned the suspect may have victimized others in the past.