Black hat

Takahiro Shiraishi

Japanese serial killer (1990–2025)

Life

1990 – 2025

Born

October 9, 1990

Died

June 27, 2025

Nationality

Japan

Takahiro Shiraishi was a Japanese serial killer and rapist. He was also known as the Twitter Killer or the Zama Suicide Pact Killer, which he was labeled as in most media reports at the time of his sentencing. In Zama, Kanagawa, between August and October 2017, he murdered nine people, eight of them being young women, including three high-school girls, in an incident known as the Zama Nine Murders.