ISLAMABAD : Chairman of All Pakistan LPG Distributors Association (APLPGDA) Irfan Khokhar Friday alleged that the 'Gas Mafia' had grabbed billion of rupees during last six years by creating artificial shortage of Liquefied Petroleum Gas (LPG) and selling the domestic product in the name of imported gas. "A powerful gas mafia is freely operating, which has made around billions from consumers during the last six years by creating artificial shortage of LPG, especially in winters," he told APP.