Police seized 50 suspected stun guns from a parcel intended to be sent overseas. Officers found the parcel at a warehouse in Cheung Sha Wan after worker filed a report. Police said they needed to confirm whether they were genuine stun guns. No one was arrested. The case is being handled by detectives at Sham Shui Po police station. In January last year Deputy District Judge Rickie Chan Kam-cheong warned that the possession of stun guns was a serious crime. He jailed an American kung fu enthusiast, Alan van Leuven, 38, for 16 months for keeping stun guns, knuckledusters and bayonets in his hostel room. Van Leuven said he had bought the weapons from vendors who openly displayed them in shopping areas popular with tourists.