A JUDGE ordered an alleged murderer be acquitted yesterday because of the 'sinister' circumstances in which the man was handed over to the police by triad bosses. Chan Ka-kui, 21, claimed he had been made the fall guy for the murder after a deal was struck between 'big brothers' from the 14K and two police officers. He had originally been treated as a prime witness in the case after taking the victim to hospital and giving police a statement saying he had seen the assault. But two days later, triad bosses handed Chan over to officers in a deserted Yuen Long car park saying he wanted to confess to the murder. Instead of being taken to the police station, Chan was driven home so he could have a bath and say good-bye to his mother before going into custody. The officers concerned allowed the triad members to drive away without even taking their names, the court heard. Mr Justice Duffy said: 'Such odd and sinister circumstances have caused me much concern.' The bizarre backdrop had 'cast sinister shadows over the case', he said. The judge said senior officers had failed to show any interest in making sure careful inquiries were conducted. When Chan, who has spent more than seven months in custody, was handed over to the officers, there was not a scrap of evidence against him, the court heard. But once he was in custody he 'confessed' to the murder. Mr Justice Duffy had ruled that the confession could be put forward in evidence. But after hearing prosecution witnesses give evidence, he changed his mind. 'I am not at all sure that the defendant made his admissions freely and without pressure or inducements,' he said. Prosecutor Dee Crebbin then offered no evidence and the jury was directed to return a not guilty verdict. John Haynes, defending, claimed the police officers had tried to cover up their close dealings with triads during their evidence. 'That was a very wicked thing to do,' he told the judge. He said the triads were not famous for advising their followers to surrender to the police, unless they had something to gain. An officer involved in the case said it was likely there would be an inquiry into the conduct of the police officers concerned. Chan claimed he was a good Samaritan who ended up facing a murder charge. He said he and his girlfriend saw the woman victim, drug-addict Lo Kwai-chun, 35, being attacked in a Yuen Long park in the early hours of March 23 this year. After the attack, they picked her up, flagged down a taxi and took her to hospital. There was blood oozing from her mouth and she was certified dead on arrival. Chan left his name, address, telephone number and ID card number with hospital staff. He was treated by the police as an important witness and made a statement explaining the circumstances in which he found the body. But two days later, Police Sergeant Tang Wai-ming received a telephone call from a triad saying that one of his followers wanted to surrender to the police, the court heard. Police Constable Chow Wai-yip knew the caller because they drank in the same bar. The two officers met the man and another triad member on a hillside in Tai Mo Shan. The defence claimed it was then a deal was struck and Chan was handed over to the police. Both officers denied this in court.