A father accused of strangling his wife in front of their teenage son during a domestic row was found guilty of manslaughter by reason of provocation last night. Ling Kam-wah, 38, was convicted of killing Ho Wai-chun, 44, in their Mongkok flat on February 1 last year. Ling sighed when the jury found him not guilty of murder but remained impassive when they returned a guilty verdict for manslaughter. The only witness to the crime, Ling Siu-tong, who was 15 at the time, told the Court of First Instance he was typing in the flat when a row broke out between his parents. He testified that the row was more serious than usual after his mother refused to give his unemployed father any money. Siu-tong said that in between glances towards his parent's bedroom he saw his father slap his mother across the face, after which Ho kicked him. He also testified that he saw his father appear to strangle his mother with either his hands or in an arm-lock. Forensic evidence showed Ho died throughthe use of some form of thin ligature. In summing up, Mr Justice Lugar-Mawson said one of the main issues was whether Siu-tong was telling the truth when he said he saw his father strangle his mother. 'Apart from Ling Siu-tong's evidence there is nothing else to connect [the defendant] to the killing,' the judge said. Mr Justice Lugar-Mawson adjourned sentencing until March 2.