June 27 (UPI) -- Japan executed a 34-year-old death row inmate known as the "Twitter Killer," who was convicted of killing nine people at his apartment south of Tokyo in 2017, marking the first person to be put to death in the country in nearly three years.

Takahiro Shiraishi was executed at the Tokyo Detention House, Japanese broadcaster NHK reported.

The method of execution was hanging.

"I ordered the execution after careful and deliberate consideration," Justice Minister Keisuke Suzuki told reporters during a press conference following the execution, the Kyodo News agency reported.

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