A MAN accused of involvement in a $200,000 robbery has been cleared after claiming he was beaten up by officers who forced him to confess - the second case in as many days to be dropped because of allegations of unacceptable police behaviour. Both cases have provoked calls for reviews of police procedures. Legislators have also demanded the immediate introduction of recommendations in a 1992 Law Reform Commission report which advocated an urgent overhaul of arrest and detention procedures. Since late May, 10 alleged murderers, an alleged rapist and an alleged robber have been acquitted due to allegations of police brutality and impropriety. Five judges in separate cases ruled confession statements could not be accepted because of suspicions about the way in which they were obtained. Assistant Commissioner (Crime) David Hodson last night defended force policy, saying existing guidelines were clear-cut and vigorous. Mr Hodson said it was inevitable cases would be lost because of judicial reluctance to accept police versions of events. He said police were 'positive and anxious' to extend the video recording of suspects' interviews but were bound by resource limitations. 'There is no great issue here, but obviously we are concerned each time this happens,' he said. 'It is not uncommon for statements to be thrown out.' Legislative Council security panel chairman, James To Kun-sun, said he would start lobbying for tracts of the Law Reform Commission report to become law, especially the parts related to detention procedures. In the latest case, Mr Justice Wong said he could not be sure the confession had been made voluntarily. 'Having given the matter the utmost consideration, there remains in my mind a lurking doubt,' he said. He ruled the statement, the only evidence against defendant Wong Chun-lam, could not be put before the High Court jury. Prosecutor Wayne Moultrie then offered no evidence and verdicts of not guilty were entered. Wong, 27, denied charges of robbery, false imprisonment, theft and burglary on February 13 this year. He was cleared on Thursday but, for legal reasons, his acquittal could not be reported until today. A second defendant, Yu Wing-wah, pleaded guilty to robbery and false imprisonment and is expected to be sentenced on Monday. He claimed his confession was fabricated by police, but the judge rejected his claim. Wong was released on the same day an alleged murderer, in another case, was acquitted because of a judge's concern over 'sinister' links allegedly between police who arrested him and triads. Chan Ka-kui, 21, claimed he had been made a fall guy after a deal was struck between two police officers and two 'big brothers' from the 14K. In the robbery case, Thomas Yiu, defending Wong, told the judge the suspect had been assaulted by police at Western station. One officer told Wong they were from Western District Crime Squad and he should consider the consequences if he continued to deny the allegations, the judge heard. Mr Yiu said Wong had been taken to a CID room on the first floor of the station and told to sit on a straight-backed chair. His hands were cuffed behind his back. A police officer pushed down on Wong's shoulders and punched him five to six times on his chest, asking him if he would confess, Mr Yiu said. Wong showed the police a note from his solicitor saying he need not say anything. He was ordered to stand up. Three officers punched and kicked him several times on his chest, back and genitals, it was alleged. A female detective constable told Wong he would have to confess if he did not want to be beaten up, Mr Yiu said. The officers, giving evidence in a pre-trial hearing, denied any impropriety. Wong, now serving a sentence at the Drug Addiction Treatment Centre for possessing cannabis, was arrested on April 26 and initially held at Kowloon City police station. While there, he consulted a solicitor and was told he had the right to remain silent. The suspect was then transferred to Western police station where he promptly confessed. Mr Justice Wong said: 'I feel somewhat uneasy about this aspect of the case. The explanations by the officers that Wong had a change of mind the moment he arrived at Western police station is not convincing.'