Hong Kong yoga ball murder case retrial: ‘lethal gas was to kill shrews lured by ham’

A yoga ball brought in for evidence. The accused has denied filling a yoga ball with carbon monoxide and placing it inside the family’s yellow Mini Cooper to kill his wife and daughter. - Photo: Dickson Lee/SCMP

HONG KONG: A former university professor brought two yoga balls filled with lethal gas to his Hong Kong home to exterminate shrews that had been attracted by the smell of Spanish ham, a court has heard in the trial over the alleged murder of his wife and daughter.

Anaesthesiologist Khaw Kim Sun, 60, told the High Court on Wednesday that he decided to bring the surplus carbon monoxide from his laboratory back to their three-storey Sai Kung home after he had tried various pest control methods in vain.