Police in Toyama Prefecture have arrested a 53-year-old man on suspicion of planning to kill multiple people in Tokyo, according to a report about the case. Officers went to an apartment in Namerikawa on July 11 and told the resident he was under arrest over the alleged plot.

The case has drawn attention because of an unusual link highlighted in the report. It says the plan was stopped with help from a person described as a friend of the Akihabara mass murderer, adding a disturbing connection to one of Japan’s most notorious mass killing cases.

Only limited details about the alleged scheme were available in the trimmed report, but the central accusation is that the suspect had been plotting a multiple-victim attack in Tokyo. The police action suggests investigators moved before the plan could be carried out.

The story has also been framed around isolation and human connection, with the report describing the key figure as “a friend to the friendless.” That detail, along with the Akihabara link, has made the case stand out beyond a standard arrest announcement.