April 28, 1971 - Daisuke Mori
A nurse working in a pediatric and general care setting, Mori was convicted of administering a lethal dose of vecuronium bromide to a patient — a muscle relaxant with no legitimate therapeutic use in that context. The breadth of suspicion surrounding him, spanning victims from a one-year-old to an elderly woman, places him within the category of healthcare workers whose access to vulnerable patients and clinical knowledge enabled harm that was difficult to detect. His case drew attention in Japan to the systemic challenges of identifying and prosecuting medical killings, where cause of death can be obscured by the patient's underlying condition.
From Wikipedia
Daisuke Mori (守 大助, Mori Daisuke; born April 28, 1971) is a Japanese nurse, who was convicted for giving lethal doses of the muscle relaxant drug vecuronium to his patients in a clinic in Izumi-ku, Sendai, Miyagi Prefecture. Although he was convicted of only one murder, he is suspected to be a medical serial killer.
Mori was suspected of a murder of 89-year-old woman Yukiko Shimoyama on November 24, 2000. He was also suspected of four attempted murders; a 1-year-old girl on 2 February 2000, an 11-year-old girl on 31 October 2000, a four-year-old boy on 13 November 2000 and a 45-year-old man on 24 November 2000. He was arrested on January 6, 2001.
When he was arrested, he was reported to have murdered at least 10 people. However, he insisted on his innocence four days after his arrest. There were also many problems and mysterious deaths in his hospital, so his lawyers insisted that he was accused as their substitute.
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