Couple arrested on suspicion of murder of second daughter and older sister Has she been offering food and drinks to her older sister?. Suspect Kenichi Hosoya (43), a company executive in Tokyo's Taito Ward, is suspected of murdering their second daughter Miki (4) by ingesting the harmful chemical ``ethylene glycol.'' He was arrested again for killing Kenichi's older sister, Minako Hosoya, by ingested the same substance six years ago in April 2018.
It is also believed that the duplicate key to Minako's room was kept at the office of her father's company.