A TEENAGER was lured to a friend's flat and robbed by a masked man, the District Court heard yesterday. Lau Siu-lam, 22, was found guilty of a count of robbery. He had denied robbing Manjit Singh of a necklace and a bracelet worth a total of $5,000, outside a seventh-floor flat in Lai Tak Tsuen, North Point, on August 2 last year. During the trial in June, Lau's co-defendants, Chan Kwok-wing, 18, and Ho Lung-wai, 16, absconded, but they were re-arrested late last month. Ho pleaded guilty to the charge and turned prosecution witness when the trial resumed. Chan also pleaded guilty after the court submitted his statement as evidence. The pair will be sentenced today. Deputy Judge Duggan adjourned sentencing of Lau until August 27. Prosecutor John Marray said Manjit met Lau as arranged in a video games centre on August 2. Lau introduced Manjit to Chan and Ho, and later asked Manjit to come to his home in Lai Tak Tsuen. After they entered the building, Lau ran up the stairs, leaving Manjit behind. Manjit lost sight of Lau but saw Chan when he reached the fifth floor. Chan took Manjit up to the seventh floor, where he said Lau was waiting, but Manjit was then approached by a masked man. The masked man, later identified as Ho, pulled out a knife and took Manjit's necklace and bracelet.