An investigation has been launched into how a nurse at a psychiatric clinic in Pallini, northeast of Athens, died shortly after a row between two patients.
The incident occurred late on Saturday. It is not clear how the nurse was killed but a few hours earlier, nurses at the clinic had to break up a fight between two patients.
The nurse was found dead by his colleague, who had been in another part of the clinic consulting with a doctor. The local authority has ordered an investigation into the incident.