Alleged Weapon in Double Murder: A Gas-Filled Yoga Ball
He told co-workers he was going to kill rabbits, and he told police that he only meant to get rid of rats—but prosecutors say a Hong Kong professor used a rather odd weapon to instead murder his wife and teen daughter. That alleged weapon: a yoga ball filled with carbon monoxide, which Khaw Kim-sun is accused of leaving in the trunk of a Mini Cooper his wife, Wong Siew-fung, was driving in May 2015, the South China Morning Post and BBC report.