The Tokyo Metropolitan Police Department sent papers on Hiroyuki Nishimura, the founder and former operator of Japan's popular online bulletin board “2channel” [ja] to prosecutors on December 20 2012, accusing him of helping in the solicitation of the narcotics trade, Jiji Press reported.
@Ikalga commented [ja] on Twitter that accusing the former operator for failing to delete comments of an illegal transaction is nonsense:

Sending papers on Hiroyuki to prosecutors, is like blaming swordsmith for a suspect swinging his knife on the street.