A young medical professional accused of secretly placing cameras in hospital restrooms to capture inappropriate photos of staff is now facing over 130 charges, with a judge noting that the total could reach over 500.

Ryan Yi Cho had 127 additional charges filed against him on Wednesday, including creating indecent images and stalking. On Friday, he appealed to the Victorian Supreme Court for bail.

Cho, aged 28 and from Croydon Hills, located in Melbourne’s eastern suburbs, was previously denied bail by Melbourne Magistrates’ Court. However, on Friday, he was granted bail with stringent conditions that prevent him from owning any device capable of recording, such as a mobile phone.

His parents flew in from Singapore on Friday to propose a $50,000 bond to secure his release until trial, disclosing they had already invested $500,000 in his medical education.

His father, Wilson Cho, who works as a logistics manager, informed the court that he had prepaid six months’ rent for a property in Melbourne and was willing to further assist financially.

Mr Cho also vowed to fully fund his son’s living expenses and legal bills until the criminal proceeding has been completed.

In discussions with Cho’s defense lawyer Julian McMahon SC, Wilson Cho explained that he would accompany his son on walks and read books together, should the court restrict internet access.

Mr McMahon, engaged by top criminal lawyer George Balot, also told the court his client would only be allowed to use a phone which had no recording capabilities.

The court heard Cho, if granted bail, would not be allowed to enter professional workplaces or hospitals and not approach witnesses.

But prosecutor Russell B Hammill opposed Cho’s release and said the accused had already approached one  alleged victim, who was an ex-flatmate and a witness.

Mr Hammill told the court Cho allegedly took intimate images of the female who he hadn’t contacted in ‘three or four years’

Mr Hammill also alleged it was assumed Cho contacted the former flatmate in a bid to live with her.

Mr McMahon SC later told the court Cho contacted the female before he was charged in relation to her allegations not after as the prosecution suggested.

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’.

Mr McMahon told the court that the charges against Cho are ‘going to grow by hundreds more over the remainder of the year’ .

The court heard investigators had almost completed examining various electronic devices and had taken more than 200 statements.

The prosecution expects hundreds more statements will be taken but can’t say how many alleged victims there will be once the investigation is complete.

Mr McMahon said his client had no ties to organisation crime nor the contacts to facilitate a fake passport.

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 allegedly 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.

The court was also told accusations Cho secretly filmed friends of his housemates. 

Mr Balot, of Balot Reilly Criminal Lawyers, who unsuccessfully argued his client should be released on bail. on July 25

‘He has engaged criminal lawyers, a psychologist, a sexologist, his parents are in Australia to do whatever it takes to have him released to their care,’ he said at the time.

Cho is a Singapore citizen who has been living in Australia as a permanent resident after completing a Monash University medical degree.

Mr Hammill told the court it was likely Cho will have his visa cancelled and be deported back to his homeland if he is sentenced to a jail term of 12 months or longer. 

Mr Hammill also highlighted Cho had no family ties to Australia nor did he own any property.

The prosecution also feared Cho would have access to numerous public toilets while on bail.