As the house of Rajendran in Edayarpalayam on the outskirts was found closed till long in the morning, neighbours knocked and peeped through the window to find that he, his son and daughter lying on the floor and immediately informed police.
Police broke open the door and found the bodies of 16-year-old son and 14-year-old daughter and Rajendran struggling for life, police said.
Even though Rajendran was taken to Government hospital, he died immediately on admission, they said.