The House of Representatives...[has] set up an ad hoc committee to investigate the non-remittance of $13.9 billion into the Federation Account by the Nigeria National Petroleum Corporation, NNPC...The ad hoc committee has...been mandated to investigate the volume and value of crude oil sales and remittances into the Federation Account...by NNPC...This followed recent revelations that NNPC has remitted only $7 billion out of $20.9 billion of crude oil sales this year...[Member of the House, Haruna Manu] said there have been lingering issues of accountability and arbitrary management of oil revenue by NNPC...