A teenage schoolgirl was inappropriately touched by a man while both were riding on a crowded train in Sydney on Wednesday morning, and the police are now on the hunt for the suspect.

The 17-year-old girl, who was not identified, was on her way to school when a man standing beside her placed his hand under her skirt and began to assault her lewdly, according to the Sydney Morning Herald.

Burwood Local Area Command’s Chief Inspector Traci Watt said the incident took place on a crowded train between Strathfield and Ashfield railway stations at around 8:30 a.m. The girl was alone at that time.

Once the train stopped, the girl left the train and reported the attack to the police. Other passengers might not have been aware of the attack.

The man who assaulted the teenage girl has been described as someone of Indian or Subcontinental appearance, in his 30s, 180cm tall, has an average build, short black hair, clean-shaven and wearing a possibly black turtle neck top and black sunglasses.

Burwood Police are seeking to obtain CCTV footage of the man, as well as urging possible witnesses to come forward and help with the case. It has yet to be determined which railway stations the man got off, according to News.com.au.

This latest incident about indecent assault adds to the long list of cases of women in the country being sexually assaulted and raped.

Police retrieved a GoPro camera that contained footage of “an unconscious or semi-conscious 16-year-old girl,” who was being gang raped by her offenders at a party in St. Clair in May of last year.

A similar incident to that of the 17-year-old teenage girl also happened to a 41-year-old woman in Queensland, who was sexually assaulted by a tall and muscular man as she was walking along the beach.