A WOMAN was stabbed to death in a Tai Po car park yesterday in what police believe was a lovers' tiff. Ms Kong Choi-ha, 26, sustained face and neck injuries during the attack. With her in a yellow Mazda 121 saloon was a 28-year-old man who told police he had stabbed the woman during a row over a failed romance. The man is believed to have injured himself with the same 20-centimetre knife used to kill Ms Kong. Last night he was in fair condition at the Prince of Wales Hospital with lacerations to his neck and chest. Police have classified the case as murder. Police sources said the suspect telephoned Ms Kong saying he wanted to borrow her car and she met him at the Wan Tau Tong Estate car park. But the conversation turned to talk of separation and during the ensuing row Ms Kong, a Customs officer at the Lowu border crossing, was attacked. She was certified dead on arrival at the Tai Po Jockey Club Clinic. The alarm was raised by a car park security guard. Mr Yeung Chi-shing, 67, heard a car horn. As he reached the first floor he found the suspect leaning back in the driver's seat of the Mazda. ''He told me he had sustained an injury and asked me to alert the police,'' Mr Yeung said. FIVE mainland customs officers hurt by an explosion while they were tackling a man trying to smuggle grenades into Macau last month were rewarded by senior Zhuhai officials. All were given pay rises and cash rewards varying between 5,000 yuan (HK$6,735) and 10,000 yuan.