Authorities say parts of a woman's body have been found in two plastic barrels in a garage near Frankfurt, but it's unclear how long ago she died, who she was and what happened to her.

Police said the body parts were found Wednesday by relatives of the man who had rented the property in the town of Schwalbach. They say the 67-year-old man died late last month.

Prosecutor Nadja Niesen said Friday an autopsy showed that the remains were those of a middle-aged woman but her identity, the cause of death and when she died remained unclear.