Police closed an illegal go-karting track in Castle Peak yesterday, arresting the operator and two of his staff. Investigators also warned that go-karting fans could be prosecuted in future if caught driving at unlicensed tracks. However, eight people found karting at the track when police raided yesterday were allowed to leave without prosecution. Acting Castle Peak divisional commander Chin Chi-chung said members of the public should not participate in illegal karting activities because they posed a hazard to themselves and others. The Lo On Pai flea market track had been operating without a licence since September. Mr Chin said police impounded eight karts in use at the time of the raid and arrested the operator, 41, and staff. Inquiries revealed that a company hired a piece of land in the flea market several months ago. 'The company has submitted applications to the Television and Entertainment Licensing Authority and the Electrical and Mechanical Services Department to run karts as amusement machines and the track as an amusement ground,' Mr Chin said. 'However, the company has operated the track since September 30 and has maintained about 40 karts while the applications were still being processed. 'Before exemption is granted by the Commissioner for Transport, or an amusement ride licence is issued, the track falls under the definition of a road and is covered by the Road Traffic Ordinance,' Mr Chin said. The ordinance requires any motor vehicle on a road to be registered and licensed. The acting divisional commander claimed the operator continued to run the track despite repeated verbal and written warnings. The final warning was issued on Thursday, telling the operator he would be prosecuted unless he suspended the karting. 'We have given him enough warnings,' he said.