Reportedly, the son's first words after his arrest were an admission to the crime, stating that he had inflicted multiple stab wounds on his mother.
Police have arrested the dead woman's 83-year-old husband in connection with the incident.
A femicide was reported in Sitochori, a village in the Municipality of Visaltia, Serres, early Wednesday morning.
A 51-year-old man was sentenced to life in prison in Greece for dousing his wife in gasoline and burning her alive in front of their children.
A 39-year-old man confessed to killing his wife with a hammer and hiding her corpse in the attic for a week.