Where did the stabbing occur?
The stabbing occurred at the Rihga Royal Hotel in Tokyo's Shinjuku Ward.
News / Crime
A woman was arrested after allegedly stabbing two acquaintances at the Rihga Royal Hotel in Tokyo's Shinjuku Ward. The incident occurred on Friday night, leaving a man in his 50s and a woman in her 40s injured.
On April 11, 2026, Aiko Kobayashi was arrested after allegedly stabbing two acquaintances at the Rihga Royal Hotel in Tokyo. The incident occurred at approximately 9:30 p.m. when police received an emergency call from the hotel. Initial investigations suggest a possible dispute between the involved parties. The Rihga Royal Hotel, located near Waseda University, became the scene of the crime when Kobayashi allegedly used a small knife to attack the victims while dining with friends. The Metropolitan Police Department is further investigating the motive behind the stabbing, with early reports indicating a dispute related to a marital relationship.
The stabbing occurred at the Rihga Royal Hotel in Tokyo's Shinjuku Ward.
Aiko Kobayashi, 58, was arrested on suspicion of attempted murder.
The woman sustained injuries to her right eye and both shoulders, requiring about two weeks of treatment. The man suffered minor injuries.
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