Police are investigating multiple reports of sexual assault incidents in Altona Meadows yesterday.
Investigators have been told a man on a black electric bike rode past three women as they were walking along the Skelton Creek Trail between 3:30pm-4pm.
An unknown male then sexually assaulted the women before riding off.
No words were exchanged but the male did look back at all three victims.
He is described as having a slim build, tall, aged in his early 20s and was wearing a face mask, dark pants, jumper and a black motorbike helmet.