"We are very interested in knowing who that person is," police spokesman Ewa-Gun Westford told TT.
However, the police do not want to reveal any further details about the sex or appearance.
According to police, the home service staff, who made the routine visit with the couple at 10: 40-11: 00, saw the person in connection with the apartment block entrance. When the home service came back at 14, they were both murdered.
Police are now mapping the murdered elderly couple and conducting technical analyzes and investigations, which are expected to be completed this week. The crime scene is still blocked off.