Police on Tuesday conducted search operation and raids for arresting accused after six people were killed here over old enmity. According to police, people of the Narejo community attacked a house of Kalhora community on Monday night leaving six members of a family dead on the spot. Neither the FIR has been registered yet nor has any arrest been made regard the said incident. To avoid further bloodshed, police have established check posts in the areas. It is to be mentioned here that both communities have old enmity.