Two policemen who allegedly forged the signatures of a suspected double murderer who died during questioning might have misled the Coroner's Court, a judge said yesterday. Judge Gareth Lugar-Mawson said it was possible Detective Sergeant Chong Kwok-wah and Detective Constable Wong Sek-wah had perverted the course of justice. Suspect Lam Tin-ming, 56, in a statement recorded on November 22, admitted to the two officers he had killed a man. Police also suspected him of murdering another man. Chong, 45, and Wong, 33, forged Lam's signatures after he died during interrogation, it was alleged in the District Court. The pair denied a charge of conspiracy to pervert the course of justice. But the judge said circumstances surrounding the way in which the statement came into existence might have misled the Coroner's Court over Lam's death. He ruled the two defendants had a case to answer. In submissions, both defence lawyers, Kevin Egan and James Chandler, told the court it was not safe to convict the defendants because there were various facts that had to be considered. The lawyers said the signatures on Lam's statement might have been influenced by his long history of mental illness or he may have deliberately disguised his signatures. Mr Egan, defending Chong, said although two handwriting experts for the Crown said the signatures on Lam's statement and a police notebook were forged, they did not say they were signed by the defendants. Judgment was reserved until September 6.