Sushil Kumar, along with others, is accused of allegedly assaulting former junior national wrestling champion Sagar Dhankar, a resident of Haryana's Rohtak, and his friends in the parking lot of the city's Chhatrasal stadium, on May 4 over an alleged property dispute. He has been in judicial custody since June 2, 2021. Dhankar, who was murdered, had succumbed to injuries and according to the post-mortem report, he died due to cerebral damage resulting from blunt object impact.

An incident of a brawl among wrestlers at Delhi's Chhatrasal stadium was reported on May 4, 2021 in which some wrestlers were injured and they had to be admitted to a hospital. Sagar Dhankar, being one of them died during treatment.