POLICE investigating the killing of a woman as she was robbed of a $700,000 diamond from her ring urged people yesterday to report to them any man who had unexplained injuries to his left hand.
Chow Toi-ping, 46, said she bit the hand of one of the two knife-wielding men who killed her twin sister, Toi-kuen, in Causeway Bay on Friday.
Chow Toi-kuen was stabbed in the chest and stomach in the 4 pm attack at Riviera Mansion, Paterson Street. The men stole the diamond from the ring she had been wearing.
Detective Senior Inspector Jason Chua Ming-tak, in charge of the 30-strong investigating team, said the robbers prised out the heart-shaped diamond with a knife after unsuccessfully trying to wrench the ring from Chow Toi-kuen's right hand.
The twins owned identical rings, Inspector Chua said, but the surviving sister had not been wearing hers on Friday.
Inspector Chua released a picture of her ring yesterday, and urged jewellers to be on the lookout for the missing 10-carat diamond.
Wong Pui-kwan, a bystander in the lift, received a stab wound to the groin during the struggle. Last night, he was in stable condition in Ruttonjee Hospital.