The Knox Sexual Offences and Child Abuse Investigation team are appealing for public assistance after a man was seen in Ringwood committing lewd acts.
The first incident occurred on the Mullum Mullum Creek Trail about 5pm on Wednesday 31 May, where a man was observed on the trail between Oliver and Rupert streets while committing the act.
The second incident occurred on the trail about 12:11pm on Wednesday 13 September in the vicinity of Chesney Drive.
The offender is perceived to be Caucasian, middle aged and at the time of the offence was wearing dark pants.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report at crimestoppersvic.com.au