A man convicted of murder for killing and dismembering nine people in his apartment near Tokyo was executed Friday, Japan's Justice Ministry said. 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. Police arrested him later that year after finding the bodies of eight teenage girls and women as well as one man in cold-storage cases in his apartment.