According to police, the incident occurred at around 2:30 p.m. on Friday. A passerby called police and said there was a person on fire in the front passenger seat of a car in a vacant lot, Fuji TV reported.
Police and firefighters rushed to the scene and found the woman, Masuko Miyabara, with burns all over her body. She was taken to hospital where she was died Friday night.
Police said her husband, Masahiro Miyabara, who was found nearby in another car with burns to his legs, has admitted to the crime. He told police he lost his temper after he and his wife had an argument. He was quoted as saying he threw oil on her and used his cigarette lighter to ignite it.