A fruit-stall owner who attacked and injured a hawker-control officer was jailed for a year yesterday. Judge Fergal Sweeney said Cheung Tun-yu, 29, was in court because of a misguided sense of loyalty to his mother, who had been told to clear an obstruction. He said the court needed to protect public servants from unwarranted and vicious attacks. Cheung pleaded not guilty to wounding with intent. He was found not guilty on that count, but guilty of wounding Lau Kwong-ming, 47, a senior foreman with the Regional Services Department. On the morning of March 8, Mr Lau was patrolling a Tsuen Wan market when he found fruit outside a stall area was causing an obstruction, the District Court heard. The officer told a woman - the defendant's mother - to ask her husband to see him in his office. Cheung - whose stall was nearby - claimed he belonged to a triad, rebuked the officer and threatened to kill him. The defendant chased Mr Lau, hitting him several times with a metre-long piece of water pipe before another hawker stopped him. The officer needed eight stitches in his head and was admitted to hospital for three days. Barrister Michael Delaney, in mitigation, said Cheung was married with a two-year-old son and committed the offence on impulse.