Judiciary Police officers have arrested a Hong Kong man for allegedly operating an illegal off-course betting centre in Macau, following a tip-off from ICAC officers. Officers seized equipment believed to have been used for processing bets on Hong Kong's races following a raid on a 28th-floor flat in Po Fung Court in the Avenida do Hipodromo. Police described the raided flat 'as a major communications centre' with a switchboard linked to 10 telephones and several computer terminals. Officers seized a quantity of documents including account books and betting slips. Police confirmed the tip-off came from Independent Commission Against Corruption officers in Hong Kong. ICAC officers said there was no connection with investigations in the territory into illegal bookmaking and race-fixing. The ICAC in Hong Kong this week arrested 37 people suspected of being involved in illegal bookmaking and race-fixing. Those arrested included trainers, jockeys, apprentice jockeys, staff of the Hong Kong Jockey Club and punters. Five of them - two Malaysians and three local men - appeared in Western Court on Tuesday and were released on bail pending their next appearance on charges of illegal bookmaking. The remainder were released pending further ICAC investigations. Police identified the man arrested in Macau only as surnamed Ng, 47. He was taken to police headquarters, where he was charged with operating an illegal off-course betting centre.