KNOX Sexual Offences and Child Abuse Unit (SOCIT) detectives are investigating two attempted sexual assaults which occurred in Knoxfield and Ferntree Gully.
Police have been told a 41-year-old Scoresby woman was jogging along Ferntree Gully Road in Knoxfield on Saturday 24 May when she was grabbed by an unknown man about 6.20am.
The man attempted to sexually assault her, but was disturbed by a passerby.
The offender then fled the scene and was last seen running south along Rushdale Street.
The man is described as being aged in his late twenties, approximately 170cm tall with a medium build and olive complexion.
Detectives believe the same man is responsible for a similar assault that occurred on Scoresby Road in Ferntree Gully on Monday 14 April.
A 22-year-old Ferntree Gully woman was jogging south on Scoresby Road when she was grabbed by an unknown man.
She managed to break free and fled to the safety of a passerby.
Investigators have released an image of a man that may assist with their inquiries.