A neighbour told mediapersons that he heard screams of children from the flat and when he rushed upstairs, he saw the flat was on fire.
Police and fire brigade were informed, but by the time they came, the four bodies were charred beyond recognition.
A Fire brigade officer said, they got information about the fire at around 5:45 am on Saturday. They reached the spot, brought the fire under control and found the four badly burnt bodies.