Wataru Watanabe Arrested for Fatal Throat Stabbing of 30s Colleague at Tokyo Sunshine 60 Law Office on July 1

On July 1, 2025, a fatal stabbing occurred at the Adire Law Office located on the 31st floor of Sunshine 60, a commercial complex in Ikebukuro, Tokyo. A male employee in his 30s was stabbed multiple times in the throat and was pronounced dead after being rushed to the hospital. The suspect, identified as 50-year-old company employee Wataru Watanabe from Shinjuku Ward, was arrested on suspicion of attempted murder after turning himself in at a nearby police box. Watanabe admitted to harboring a grudge against the victim, who was his coworker, citing ongoing interpersonal troubles and workplace harassment as motives. He stated that he had purchased a survival knife about a month prior and had planned the attack, even telling acquaintances he was preparing to kill and expected to go to prison. Prior to the incident, Watanabe reportedly warned those around him that he intended to cause harm. The Tokyo Metropolitan Police Department has since upgraded the charge to murder and is investigating the details of the dispute. The victim was described by acquaintances as a kind and athletic individual. The incident has raised concerns about workplace relations at the legal firm within the Sunshine City complex.