Metallic objects that appear to be rifle bullets were sent to two local NHK bureaus and its headquarters in Tokyo, the public broadcaster said Tuesday.
Another local bureau also received a suspicious envelope that appears to contain a bullet-shaped object, NHK said.
NHK’s headquarters and its bureaus in Nagano and Sapporo received the objects Monday and Tuesday. Also in the envelopes were pieces of paper with the word “Sekihotai” printed on them. Sekihotai is the name of a group that claimed responsibility for a fatal attack in 1987 on an Asahi Shimbun bureau in Nishinomiya, Hyogo Prefecture.
While the statute of limitations for the murder of a reporter and related cases has already run out, the attack recently drew renewed attention after the weekly magazine Shukan Shincho released what it said were exclusive notes by a man who claims to have been the perpetrator.
The Asahi Shimbun has said the Shukan Shincho stories lack credibility.
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