The woman has been identified as Kuldeep Kaur.
According to police, her son Jagtar Singh along with two of his relatives came home yesterday in an inebriated condition. On seeing the trio, Kuldeep advised them to give up their drinking habit.
This infuriated Jagtar, who hit her head with an iron rod. She was rushed to a hospital where she died today, police said, adding that Jagtar and his two relatives have been arrested.