Police in Japan are investigating the theft of a French violin and bow from a concert hall in Nara Prefecture, reports Japan Today. The instrument, which dates from 1804 and is valued at ¥13m (£100,000) is owned by Kazuto Umezawa, a former concertmaster of the Osaka Philharmonic and Nashville Symphony orchestras. The violin, together with a bow worth ¥3m (£23,000), was taken from an unlocked back room at the Nara Prefectural Cultural Hall, where Umezawa had been directing a junior orchestra concert.