A PARTIALLY paralysed 27-year-old who suffered a stroke in a Macau prison was found guilty of drug trafficking yesterday, four years after the crime took place. Lam Cheung-nam was found locked in a cubicle after police raided a flat on December 7, 1991. In the flat, the police found 59.08 grams of dangerous drugs, including 26.75 grams of morphine, and packing equipment. Several other people were in the flat at the time of the raid, but only Lam was charged with possession and trafficking. He claimed police beat him during the search. Lam, a heroin addict at the time of his arrest, skipped bail, but was jailed in Macau on another drugs charge. In 1994, while serving his time, he suffered a stroke which paralysed his right side and caused memory loss. Aided by a cane, Lam yesterday walked haltingly to the District Court witness stand. The fingers of his right hand were held splayed and immobilised by a plastic cast that reached to his elbow. His speech was slow and unsure. He told the court how, as an insurance agent in 1991, he earned $15,000 a month, but admitted to spending $10,000 to feed his heroin addiction. He said he spent a further $5,000 to $6,000 a month on entertainment. He testified he had drugs when the police raided the flat, but pleaded not guilty to trafficking. Lam now lives at home with his mother. He told the court he was no longer a heroin addict. The only witness was a police officer whose testimony relied on notes taken four years ago at the time of raid. Deputy Judge Andree-Wiltens found the officer to be truthful and accurate. But he told Lam: 'You have testified your memory was affected by the stroke and recall only parts of what happened. 'Those are very frank admissions, but I can't be sure that what you do recall is accurate.' The judge also noted that Lam's monthly expenditure exceeded his income. He found Lam guilty of trafficking, but said he would wait until the court had proof Lam was no longer an addict before sentencing him.