One man and one woman were killed and two others injured on Thursday night in a knife attack in Tokyo, local police said.
Police said that Nagako Tomioka, the 58-year-old head of Tomioka Hachimangu shrine, was attacked as she got out of her auto Thursday night. The motive was unclear, though Japanese media reported there may have been a feud between the priest and her brother.
Her driver reportedly has also been wounded.
The accomplice attacked the driver with a samurai sword and pursued him as he ran out of the temple grounds and about 300 feet down a road, police said. The injuries to his shoulder and chest were not life-threatening.
The assailant, identified as 56-year-old Shigenaga Tomioka, attacked his 58-year-old sister sister Nagako Tomioka, the shrine's chief priestess, with a Samurai sword and killed her after she got off from a chauffeur-driven auto.
Shigenaga and the other woman, who was his girlfriend and believed to be in her 30s, apparently ambushed Nagako after she got out of a auto on the grounds of the shrine in Tokyo's eastern ward of Koto.
"We believe the male suspect (Shigenaga) stabbed the woman before stabbing himself", the spokesman said, adding that they both died, bringing the total fatalities to three.
Shigenaga Tomioka was arrested some 10 years ago for blackmailing his sister.
Tomioka was chief priest of Tomioka Hachiman shrine.
The Tomioka Hachimangu shrine, established in 1627, is known for its Fukagawa Hachiman summer festival and its golden portable shrines.
Tomioka Hachimangu found itself in hot water with the Jinja Honcho (Association of Shinto Shrines) in 2010 over the appointment of the shrine's chief priest.