TOKYO: Detective agencies are investigating the case of a young nurse whose corpse was sent by parcel post across Japan in a box that claimed to contain a doll. The body of Rika Okada was found in a storage lock-up in Tokyo. Investigators also found the 2-metre box in which it had been transported from the southern city of Osaka, reports said. The delivery service that ferried the package – marked with the Japanese word for ‘doll’ – 400 kilometres to the capital had been paid in Okada’s own name. The bill for the lock-up’s short term rental had been settled using her credit card.