Hong Kong Aug 23 (IANS) A Hong Kong doctor killed his wife and 16-year-old daughter using a yoga ball filled with carbon monoxide a court heard on Thursday.
Prosecutors said Khaw Kim-sun left the inflatable ball in the boot of a car where the gas leaked out and killed them in the case that baffled police in 2015 reports the BBC.
Khaw pleaded not guilty to two counts of murder.
A post-mortem examination showed his wife and eldest daughter had died from carbon monoxide poisoning.
The police found a deflated yoga ball in the back of the yellow Mini Cooper in which their bodies were discovered.
Prosecutors told Hong Kong s High Court that Khaw had deliberately plotted to kill his wife because he was having an affair and she would not grant him a divorce.
But they said it was unlikely he wanted to kill his daughter. He allegedly told his younger daughter to stay at home to complete homework.

--IANS ksk/sed