Xinhua : Three dead , three children and four others wounded . Xinhua : Two of the injured are in critical condition. Motive for attack not immediately known . The 26-year-old man tells police he was responsible .
Xinhua : Three dead , three children and four others wounded . Xinhua : Police find two-foot ( 60-centimeter ) knife that Fang said he used . Motive for attack not immediately known . The 26-year-old man tells police he was responsible .