Sri Lanka, June 27 -- Japan has executed a man who murdered nine people in 2017, the first time since 2022 that the country has enacted capital punishment.

The serial killings by Takahiro Shiraishi, known as the "Twitter killer," had shocked the country and triggered debate over how suicide was discussed online.

Shiraishi, then 30, lured his victims - most of them young women between the ages of 15 and 26 - to his apartment, before strangling and dismembering them.

The killings came to light in October 2017, when police found body parts in the Japanese city of Zama, near Tokyo, when they were searching for one of the victims.

Shiraishi later admitted to murdering nine suicidal victims and revealed that he got acquainted with them on T...