32-year-old allegedly admitted to charge, saying Mizuki did not respond to his email

32-year-old part-time worker and Nagahama City resident Akihiro Fukushima was arrested on Monday on the charge of obstructing business, after allegedly posting on Twitter that he would kill singer and voice actress Nana Mizuki. According the police investigation, the suspect from Shiga Prefecture admitted to the charge by saying, "I emailed Mizuki to say, 'I want to meet you,' but got no response, so I did this out of spite."

The police reported that the suspect wrote to Mizuki's Twitter account on February 2, "I've got no choice but to kill Nana Mizuki," and other messages. The police are charging him with interfering with the business activities of Mizuki's fan club management.

Mizuki's representatives filed a complaint with the Tokyo Metropolitan Police in Akasaka on the same day they received the alleged threats. The police uncovered the suspect from the Twitter account name and other leads. After the incident, Mizuki's agency beefed up security at events.

Another male part-time worker was arrested in 2008 for posting on the 2ch online message board that he would kill Mizuki and her fans.

Source: NHK News, Jiji Press, Asahi News via Hachima Kikō