Takahiro Shiraishi was executed for the killings in 2017 of nine victims, most of whom had posted suicidal thoughts on social media.

Takahiro Shiraishi, known as the "Twitter killer," was sentenced to death in 2020 for the killings in 2017 of the nine victims, most of whom had posted suicidal thoughts on social media.

Takahiro Shiraishi was put to death on Friday, eight years after body parts were found in coolers at his home outside Tokyo. It was Japan’s first execution in years.