Police have admitted they bungled investigations into online threats sent via virus-infected PCs of unwitting parties and made four wrongful arrests, but denied forcing the four to confess.
The Tokyo, Osaka, Kanagawa and Mie prefectural forces released reports Friday of their probes into the wrongful arrests earlier this year of four people whose computers were initially believed the source of the threats.
The police only realized their error after a suspect claiming to be the true culprit made contact.