4-year-old second daughter poisoned to death case - Psychotropic drug detected - mother regularly taking it?. In March last year, Kenichi Hosoya (43), a company executive in Tokyo's Taito Ward, and his wife Shiho Hosoya, 37, exposed their second daughter, 4, to harmful chemicals contained in car antifreeze.

He was arrested on the 14th for killing him by ingesting the substance ``ethylene glycol'' and the psychotropic drug ``olanzapine''