According to FNN News, a 24 year old blue-collar worker was arrested for posting threatening comments to Hirano Aya
on 2channel BBS. Tokyo Metropolitan Police said he has already confessed to the crime. He had been complaining about Fuji TV's variety program Pikaru no Teiri, which Hirano Aya appeared in, and posted "I killed Hirano Aya", "She is dead", "I'll blast Fuji TV to terminate her program." on 2channel and twitter last April and May.
Picture of Furuichi Yuichi, the blackmailer
Hirano Aya announced in her twitter that she has ended the contract with music label Lantis and her activity as a singer was suspended for an indefinite period.
Sources: FNN News
, Hirano's twitter