Kolkata: A 42-year-old man was beaten to death by his teenager son on Saturday night at Nawabpur in Rajarhat. The deceased, identified as Nurul Ali Tarafdar, was married second time with the boy's mother. When he saw his father was beating his mother, he took an axe and attacked Nurul from behind. However, his wife and elder son were nowhere seen. Later on Sunday morning, Nurul's brother Jalil Haque lodged a complaint against the boy, Nurul's wife Minara Bibi and elder son Bapi Tarafdar..