A junior doctor accused of secretly filming oblivious co-workers in hospital toilets has been slapped with 127 new charges including stalking.
Ryan Yi Cho, 28, of Croydon Hills in Melbourne’s east, was arrested twice in July and charged with a total of six offences for alleged offending at the Austin Hospital.
He was first arrested on July 10 after a phone concealed in a mesh bag was discovered in a staff toilet at the Austin Hospital in Melbourne’s northeast.
Later that month, he was arrested for a second time after police analysed devices and allegedly uncovered more than 10,000 videos and images.
Cho was charged by police on Wednesday with 127 further offences relating to alleged offending at the Austin but also at the Royal Melbourne Hospital and the Peter MacCallum Cancer Centre.
The new charges relate to stalking, producing intimate images and installing optical surveillance devices, police said.
Officers allege a mobile phone was used as a recording device in staff toilets at all three hospitals, that were used by doctors, nurses and other staff.
Police have confirmed their investigation is ongoing, including looking into other medical facilities where Cho worked between 2020 and 2025.
Victoria Police investigators that said more alleged victims are expected to be identified but the process could ‘take some time’.
A spokesperson for the Austin Hospital said it continues to focus its full support on all staff members affected and assist with the current police investigation.
‘We take the safety and wellbeing of our staff extremely seriously and have comprehensive services in place to support them at this challenging time,’ they told Daily Mail.
‘Given that charges have been laid and the police investigation is ongoing, it is not appropriate to comment further.’
The Daily Mail has contacted Royal Melbourne Hospital and the Peter MacCallum Cancer Centre for comment.
During an appearance at Melbourne Magistrates’ Court on July 25, the court heard that officers claimed to have found 10,374 video and image files of Cho’s alleged victims on several devices.
Victoria Police told the court there could be as many as 460 different people allegedly affected, who had all been named on numerous folders found on Cho’s computer.
The folders allegedly contained a variety of footage of both men and women using hospital toilets, the court heard.
It was also alleged in court that Cho captured much of the footage by hanging mesh bags containing mobile phones on the back of staff toilet doors, which police allege he activated to capture hours of lewd footage.
One phone allegedly contained 4,500 intimate videos of staff members, the court heard.
One video file ran for more than three hours and allegedly captured various hospital staff in states of undress as they used the toilet, the court heard.
It was also heard that Cho is alleged to have sabotaged nearby toilets by removing flush buttons, clogging them with toilet paper, or locking them from the outside, so colleagues had no other option but to use the toilet he was filming in.
Detectives believe Cho had been offending across various Melbourne hospitals from as far back as 2021, the court heard.
The court heard police believed the majority of Cho’s alleged victims were doctors, nurses, paramedics and other hospital staff.
But some videos appeared to have allegedly been captured in residential settings, with the court told detectives were afraid they included previous housemates of Cho.
Cho appeared in court in July defended by top criminal lawyer George Balot, of Balot Reilly Criminal Lawyers, who unsuccessfully argued his client should be released on bail.
Cho was supported in court by his parents, who flew in from Singapore to offer the court a $10,000 surety to ensure he complied with any bail conditions.
Mr Balot said his client’s parents would remain in and ensure Cho complied with his bail conditions.
‘He has engaged criminal lawyers, a psychologist, a sexologist, his parents are in to do whatever it takes to have him released to their care,’ he said.
Cho is a Singapore citizen who has been living in as a permanent resident after completing a Monash University medical degree.
He is expected to make another bid for bail at a hearing in the Supreme Court on Friday.
1800 RESPECT (1800 737 732)
National Sexual Abuse and Redress Support Service 1800 211 028