He then recorded a video of him jumping on the septuagenarian's body on his phone, a senior police official said.

He then went away after locking the house and later shared the video to a relative of the woman.

After being informed about the video on Monday, police went to the house and broke open the locks and found the decomposed body of the woman.

The teenager seems to have bore a grudge on the woman, a native of Rajasthan, for allegedly abusing him. However, police said they were verifying all angles.

The official added that they were ascertaining whether the teenager is a minor and evaluating his mental condition. 

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