A syndicate supplying weapons to Hong Kong robbery gangs had been smashed when police seized a record haul of stun guns, a senior officer said yesterday. Twelve stun guns were confiscated and a 30-year-old man and his father, 60, arrested when officers raided their cooked-food shop in Tsim Sha Tsui on Tuesday. Superintendent Cheung Kwai-kee, of Kowloon West Regional Crime Unit, said the 12 stun guns could each release a charge of up to 200,000 volts, easily enough to disable a person. Stun guns, which are classified by law as firearms, could leave a victim unconscious and even cause cardiac arrest in heart patients. 'We believe they were smuggled into Hong Kong from the mainland and supplied to local criminals to carry out robberies in the run-up to the Lunar New Year,' Mr Cheung said. 'They could be sold for between $3,000 and $4,000 each on the black market. A genuine pistol costs up to $10,000. 'It is the largest seizure of stun guns in Hong Kong. We believe we have successfully neutralised the syndicate and have prevented the occurrence of some serious crimes involving their use.' The raid came after police received a tip-off a week ago. Ten officers raided the shop in Kimberley Road at 9pm on Tuesday and the two suspects were arrested for possession of firearms without a licence. Police said the suspects had been involved in the cooked-food business for more than a year. Officers said the stun guns had been hidden inside shoe boxes in the shop. Last night, officers were hunting other members of the syndicate in connection with the case. Mr Cheung said police were investigating whether the syndicate had sold any weapons and how long the gang had been operating. Latest police figures show there were seven robberies involving the use of stun guns in Kowloon West in 2000 and two cases last year. Mr Cheung added: 'Possession of firearms without a licence is a serious offence. Offenders are liable to a maximum penalty of 14 years' imprisonment and a $100,000 fine if convicted.' Last night the two suspects were being questioned by police officers at the Kowloon West regional crime unit in Kowloon City.