A 17-year-old male faces charges for sexual assault in connection with two incidents in the area of Killarney Avenue and Dalhousie Drive.
Officers said a 24-year-old woman had been in the area on July 29 around 6 p.m.
A male approached her and began making inappropriate comments.
Police said the suspect sexually assaulted her as she was trying to leave the area.
In the other incident, a 35-year-old woman was sexually assaulted in the same park on July 12.
On Aug. 5, officers arrested a suspect following an investigation.
A 17-year-old male youth faces charges for two counts of sexual assault, said police.