A Japanese nurse's body was discovered in a storage lock-up in Tokyo delivered by parcel in a box marked as "doll", police investigators announced Friday.

The body was reportedly delivered about 400 kilometers to a storage facility in Hachioji in a 2 meter box (roughly 6 feet by 6 feet) marked with the Japanese word for doll, the AFP reports.

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Local authorities discovered the body of young nurse, Rika Okada, who had been reported missing after going home from Nishinari Hospital after work one Sunday night two months ago.

According to police, the victim's body suffered about a dozen or more stab wounds. There had been no indication that she had fought back as authorities had found no defensive injuries on her arms or hands.

Further investigation revealed that the box had been sent from Osaka under Okada's name. Records from the storage lock-up facility where the body was discovered showed that the rental of the storage had already been paid for by the victim's credit card.

Earlier this month, the alleged suspect - a Brazilian woman in her 20s - was an old schoolmate of Okada's in elementary school, had left the country.

Sources say the suspect had left Haneda airport through a flight bound for Shanghai, China, accompanied by another female. The suspect was assumed to have used Okada's passport.

Moreover, the schoolmate was believed to have lived not far from the storage facility where Okada's body was found. The suspect's roommate, a Chinese woman, was identified as a student in one of Hachioji's graduate schools.

Shortly before she was reported missing, Okada wrote on her Facebook page that she planned to meet up with an old friend whom she had not seen for a very long time.

Meanwhile, local authorities have neither confirmed nor denied that said elementary classmate is a suspect in the ongoing investigation.

TagsRika Okada, Murder, Tokyo