Ashok Kaka, the aide of former Haryana Chief Minister Bhupinder Singh Hooda was shot dead in Rohtak, Haryana early on 22 April.
The 60-year-old Congress leader was allegedly shot at by three unidentified gunmen during his morning walk.
"He is a Congress worker. At one time, he used to be head of Railway Road Market Association here and probably also had a jewellery outlet there. He was attacked by three assailants when he was on a morning walk in a park," Rohtak SSP Shashank Anand said.
The SSP said that Ashok was rushed to PGIMS at Rohtak, where he was declared dead on arrival.
When asked about the possible motive behind the crime, the SSP said, "We have got some information that he had some land dispute with his brother. There is also information that he had a land dispute with another party. We are trying to develop these pieces of information as we investigate the case".
He said that a case under relevant provisions of the law has been registered in connection with the incident.
-- With PTI inputs