A 49-year-old priest from the town of Agrinio, who was being investigated over a recent rape claim, was arrested on Thursday for possession of child pornography material, state-run news agency ANA-MPA reported.
The material was found in a computer at his home during a police raid.
Authorities had initially launched a probe into the suspect after a woman filed a report claiming that the priest had raped her when she was minor.
The man will be led before s prosecutor on Thursday.
Police is expected to make announcements about the case later in the day.