Police are appealing for public assistance as part of an investigation into an alleged sexual act on a train in Sydney's west.
About 1:40pm on Tuesday 23December 2025, officers attached to Nepean Police Area Command received a report of a sexual act towards a man, which allegedly occurred on a train between St Mary's and Mt Druitt.
Officers from North West Police Transport Command commenced an investigation into the incident.
Police have released CCTV footage and a description of a man they believe can assist with inquiries.
He is described as being of Asian appearance, aged between 20 and 25, of medium build, medium length straight black hair.
The man was last seen wearing a black tank top, black puma shorts, and black shoes.
Anyone with information about this incident is urged to contact Police Transport Command and Crime Stoppers: 1800 333 000 or https://nsw.crimestoppers.com.au Information is managed on a confidential basis. The public is reminded not to report information via NSW Police social media pages.
