U.K. officers warned of "wasp knife"
The Daily Mail
LONDON — Senior police officers have been warned to look out for a new knife which can inject a ball of compressed gas into its victim that instantly freezes internal organs.
The 'wasp knife', which can deliver a ball of compressed gas capable of killing its victim at the press of a button, may be heading for Britain, the Metropolitan Police fear.
Full story: U.K. officers warned of "wasp knife"