"What have you done so far? You are just fooling around," said the bench of Justice Fali Nariman and Justice Navin Sinha asking the state police to spell out how much time it would require to complete the investigation.
The top court had on January 10 sought the Centre's response on a plea for the SIT probe.
Uma Devi had requested that the SIT be headed by either a retired judge of the top court or of a High court.
The notice was also been issued to CBI, NIA, Karnataka, Maharashtra and Goa governments.
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