A man stabbed all four members of a family he was dining with at a restaurant near Tokyo on Sunday evening, killing a 6-year-old girl, police said.The police arrested Motomu Oda, 46, at the "izakaya" pub in the city of Chiba on suspicion of attempted murder. The father of the girl has told investigators the suspect was a brother of his wife.Oda spoke incoherently shortly after he was arrested but later admitted to the stabbings, the police said, adding they will carefully examine whether he is mentally competent and can be held criminally responsible.The girl was taken to hospital unconscio…READ FULL ARTICLE