A 25-year-old inmate of Korydallos Prison near Piraeus was found dead on Friday in what is being treated as a suicide.

Prison guards found the young man hanged in a disciplinary cell of Block A of the penitentiary, with bedsheet wrapped around his neck.

He had been serving a 13-year sentence for drug- and organized crime-related offenses.

An inquiry into the circumstances of his death has been launched.