JAMMU, May 7 -- The Jammu and Kashmir police has stepped up their efforts in the ongoing investigation into the murder of a person over a land dispute here and have conducted multiple raids at the residences of suspects, officials said on Wednesday.

The incident occurred on May 1, when Avtar Singh (40), son of Balbir Singh, was hit on his head with an iron rod and died because of excessive bleeding during a scuffle between two groups, who staked their claim over the piece of land in Greater Kailash locality.

An angry mob, including the family and relatives of the deceased, blocked Kalu-Chak road on Jammu-Pathankot national highway and demanded a CBI probe into the killing, police said.

"Continuing crackdown on suspects and accused involv...