Jaisalmer: Four persons have been nabbed with eight kg of heroin, worth around Rs eight crore in the market, from a hotel in the city, police said on Thursday. Jaam Khan (29), Paramjeet Singh (46), Gurdeep Singh (69) and Karpal Singh (27) were arrested last night in a joint operation by Anti-Terrorist Squad and the district police, SP (Jaisalmer) Mamta Bishnoi said. Two four-wheelers were also seized from their possession, the SP said. PTI