A 36-year-old shopkeeper was allegedly killed over a business dispute with another shopkeeper on Raman Cinema Road in Mansa town on Monday.Rakesh Kumar, who ran an energy drink shop, reportedly had a verbal argument with the owner of a shop located opposite his shop. During the dispute, he was allegedly hit on the head with a sharp-edged weapon, which claimed his life.Mansa City-II police have registered a case against four persons, including Hardyal, his wife Anju Bala, his son Dikshu, and another person identified as Kamal Sethi.The police said efforts were underway to arrest the accused.