Japan has executed a man dubbed the “Twitter killer,” who was convicted of murdering and dismembering nine people, mostly women, in the country’s first use of capital punishment in nearly three years.

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

Takahiro Shiraishi was sentenced to death for his 2017 strangling and dismembering of eight women and one man in his apartment near Tokyo.