Czech postal workers have found a second parcel containing human body parts.
Staff at a post office in Brno opened the parcel because of the strong smell coming from it.
A rotting human arm and leg were found in a parcel at another Brno post office on Friday.
South Moravian police spokeswoman Kamila Janickova told the CTK news agency: "The parcel was posted from Prague to Uherske Hradiste (south Moravia). Because no-one has collected it there, it was returned to Brno where the staff opened it because of a strong stench."
She refused to say which parts of a human body had been found, the Czech Happenings website reports.
A post-mortem and special X-ray examination will be carried out.
The website says police are investigating whether the sender and addressee were fictitious as was the case with Friday's find.
PA