The Fourth Additional District Judge (ADJ) G Srinivas awarded death penalty to three persons -- Y Siva Krishna, A Murali Krishna and P A Nageswara Rao.
The court found them guilty on charges of murder, theft and causing disappearance of evidence of offence under relevant sections of IPC, in connection with the case of murder for gain of irrigation engineer P Naik in Nalgonda district in 2011.
The trio were charged with murder and taking away property of the engineer, police said.
Trials against them were on in different courts, he said, adding that they were earlier convicted for 10 years in a case.