A 49-year-old woman in Japan is arrested on suspicion of injuring her 42-year-old roommate by allegedly sewing the woman’s lips together with a needle and thread, according to local police. Police say the alleged incident happened at the suspect’s home in Ibaraki Prefecture, northeast of Tokyo, on June 29. The suspect, identified in reports as Masae Sakurai, had been living with the injured woman since around April 2025, after which the injured woman reported the incident to authorities. The injured woman tells police she was “too scared to run away” before the incident. She later fled and sought help. Reports state that Sakurai was arrested on Monday. Police are investigating the case and the circumstances leading up to the alleged assault, including the nature of the relationship between the two women and the events on the day of the injury. Authorities have not publicly confirmed a motive in the accounts provided by the outlets.