‘Love triangle’ probe after family of three killed

Steven and Min Cho (left) were found dead while taekwondo instructor Kwong Kyung Yoo had stab wounds.

Steven and Min Cho (left) were found dead while taekwondo instructor Kwong Kyung Yoo had stab wounds. Photo: Instagram

Homicide police have linked the deaths of a husband, wife and their seven-year-old son whose bodies were found at two horror crime scenes in Sydney.

Several media outlets have identified the deceased as Min Cho, her husband Steven Cho and their son Benjamin, 7.

Steven Cho’s body was discovered first on Tuesday morning at a townhouse on Watkins Road in Baulkham Hills, following a concern for welfare report.

A few hours later, police found the bodies of Min Cho and the young boy at the Lion’s Taekwondo and Martial Arts studio in North Parramatta.

The mother and son had reportedly been stabbed to death inside the gym and their bodies dumped in an alleyway beside the building.

Homicide detectives are piecing together whether the deaths are linked to a fourth person who is currently in hospital, identified in media as martial arts instructor Kwang Kyung Yoo.

It was when Yoo took himself to Westmead Hospital with serious stab wounds very early Tuesday that police were alerted and later found the three bodies.

Detectives are reportedly considering a possible ‘love triangle’ and are investigating any links between Min Cho and Yoo, known in the martial arts community as Master Lion.

The Daily Telegraph reports that Min Cho and her son were stabbed first at the taekwondo studio and Steven Cho was killed afterwards.

Yoo was undergoing surgery on Tuesday for the wounds he had suffered during what police described in a media release as a “separate stabbing”.

Homicide detectives are treating the two death scenes as linked, with forensic officers combing the both areas on Tuesday.

Emergency services draped plastic over the large windows of the martial arts studio to prevent the public peering inside.

As the deaths came to light on Tuesday, taekwondo students received a strange text message before their scheduled classes at the centre.

The message explained that Master Lion would not be able to instruct that afternoon because he had been involved in a serious car accident.

“Due to injuries resulting from a car accident this morning, Master is currently in the hospital. Therefore, taekwondo classes will be temporarily suspended starting today,” said the text.

It also advised parents who had booked after-school pick-up to collect their own child directly.

Over at the townhouse where Steven Cho’s body was reportedly found in the kitchen, neighbours told media his mother had arrived earlier that day and was informed by police the family was dead.

“She was told her entire family (was) wiped out,” a neighbour said.

Anyone with information that may assist investigators is urged to contact Crime Stoppers: 1800 333 000 or

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