Share The House of Representatives on Wednesday expressed grave concern over the controversy trailing the resuscitation of fuel subsidy on Premium Motor Spirit (PMS) as well as allegation bothering on the diversion of crude oil at Warri Refinery, in Delta State. The House in-session who expressed displeasure over the myriad of challenges facing the shutdown of the dyfunctionality of the domestic refineries, mandated its Committee on Petroleum Resources (Upstream) to investigate the activities of Nigerian National Petroleum Corporation (NNPC) on the operations of the haulage challenges, inadequate storage tanks affecting the Warri refining and petrochemical company in the bid to forestall the frequent shutting down of the refinery.