MELBOURNE, Australia (AP) 鈥 A taekwondo instructor killed a 7-year-old student at his academy and the boy's parents before going to a Sydney hospital with stab and slash wounds on his body, police said Wednesday.
Kwang Kyung Yoo, owner of the Lion鈥檚 Taekwondo and Martial Arts Academy and known to his students as Master Lion, will eventually be charged with three counts of murder, Homicide Detective Superintendent Daniel Doherty said.
The crimes were discovered after the instructor admitted himself to a hospital on Monday night suffering 鈥渟tab wounds or slash wounds鈥 to his chest, stomach and arms, Doherty said. He said the man told police he had been attacked in a supermarket carpark.
Police allege Yoo killed Min Cho, 41, and her son at his academy after a class on Monday before driving to their home, where he killed Cho鈥檚 husband and the boy鈥檚 father, Steven Cho, 39. Police did not officially release the victims鈥 names, but the adults were identified in media reports.
Police discovered the bodies Tuesday and arrested Yoo at the hospital.
Police have yet to reveal a motive. They knew all four were born in South Korea and the slain boy had been a regular taekwondo student.
鈥淲e鈥檙e still establishing what other connections or ... what other relationships may have been or may not have been,鈥 Doherty said.
Unnamed police sources told media the mother and son were strangled. The father was stabbed to death. Police have yet to determine how Yoo鈥檚 injuries were inflicted.
鈥淚t鈥檚 not only tragic in the circumstances, but the consequences were cataclysmic. We鈥檝e just lost three people from one family who鈥檝e had their lives taken away,鈥 Doherty added.
Yoo drove the woman鈥檚 BMW sedan from the academy to the family home and then to the Sydney hospital, media reported.
He underwent surgery for his wounds and understood that he was under arrest, Doherty said.
"There was no warnings, from what we have gathered so far. It was out of the blue. It wasn鈥檛 something that was forewarned or planned,鈥 Doherty said.
The maximum penalty for someone convicted of murder in New South Wales state is life imprisonment, with a standard non-parole period of 20 years for the murder of an adult and 25 years for the murder of a child.
