Police are to liaise with the Independent Commission Against Corruption over possible new in-force safeguards after five police officers were arrested for allegedly shielding triad gangsters. Police Commissioner Tsang Yam-pui said the force would not tolerate illegal behaviour. 'We will keep in touch with the ICAC to see what information they can provide for the police force,' he said. 'With that information we could perhaps improve procedures within the force and plug loopholes that might exist.' The Independent Commission Against Corruption arrested five police officers on Tuesday for allegedly shielding triad gangsters in return for cut-price vice services and free meals. Mr Tsang said the investigation was continuing but said the arrests came at a time of declining corruption allegations against police. He said that over the past 10 months the number of such allegations received by the ICAC had dropped 17 per cent, from 489 to 406, compared with the same period last year. Mr Tsang was speaking at the opening of the police's Tactical Training Complex, which provides a simulated environment of various urban scenarios for police training. The complex, costing about $162 million, occupies about 3,000 square metres at the Police Training School in Wong Chuk Hang. There are simulations of an MTR station and train, restaurants, jewellery shops, a bank, a public housing flat and a massage and sauna centre. The centre will be used to teach officers to deal with street crime, minimise conflict and avoid being hurt while carrying out searches and investigations.