Parents of a 4-year-old girl were arrested Wednesday for allegedly killing her with a toxic substance and antipsychotic drug at their home in Tokyo in March last year, police said.Kenichi Hosoya, 43, and his wife, Shiho, 37, were arrested after their daughter, Yoshiki, died from poisoning on March 13, with ethylene glycol and large amounts of olanzapine, a medicine prescribed for mental disorders, detected in her body, an investigative source said.The police suspect that Yoshiki ingested ethylene glycol, as her parents allegedly made her consume anti-freeze additives used in engine coolants…READ FULL ARTICLE