Further investigation into the matter is underway. (Representational)
A 45-year-old man allegedly killed his son and mother in Arunapathi village near Uthangarai on Saturday, said police.
The accused has been identified as Dhandapani and the victims as Subash (son) and Kannammal (mother).
According to the police, the accused killed his son for marrying a Dalit girl and murdered his mother who tried to rescue her grandson, in a fit of rage.
Detailing the incident, the police said, "In the last week of March, Subash married a Dalit girl named Anusuya and left their home.
"The accused Dhandapani used to work in a private company in Tirupur and returned back to his village Arunapati on Friday. He asked his mother Kannammal to call Subhas and ask him to come home with his wife," added the police.
The police said, "On Friday at around 4 PM, Subash with his wife Anusuya came to Arunapathi and spent time together."
"After having dinner when everyone went to sleep, accused Dandapani allegedly attacked his son and his wife with a knife in the early hours of Saturday. He also allegedly attacked his mother who tried to save her grandson," added the police.
The police said that after attacking all three of them, Dandapani locked the house and fled away.
The police said, "Further, after seeing Subash's wife lying in a pool of blood on the side of the road in the early hours of Saturday, the villagers rushed all three of them to Uthangarai Government Hospital where Subash and Kannammal were declared brought dead by the doctors, while Anusuya is undergoing treatment in the intensive care unit."
"The bodies have been sent for postmortem and a team of police led by Deputy Superintendent of Police Uthangarai Amala Advin is looking for Dhandapani who is on the run," added the police.
Further investigation into the matter is underway.
(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)