On December 27, 1988, Sidhu and one of his associates, Rupinder Singh Sandhu, had allegedly hit one Gurnam Singh on his head.
An altercation between them caused the incident and Gurnam Singh later died.
Navjot Singh Sidhu accepted the SC verdict, tweeting "Will submit to the majesty of law …."
The top court had convicted Sidhu for the offence of "voluntarily causing hurt" in 2018 but had acquitted him in connection with the culpable homicide charges.