Two senior Tanzanian officials were arrested after they failed to produce details of multi-billion dollar natural gas extraction agreements signed with Statoil of Norway; the BG Group and Ophir from UK; and ExxonMobil from the U.S. Opposition politicians want assurances that the money will be spent in a transparent manner. James Andilile and Michael Mwanda, the chair and the acting director general of the Tanzania Petroleum Development Corporation respectively, were taken into custody on Tuesday for not meeting a deadline imposed by the Public Audits Committee to release details of the 26 production sharing agreements signed by the Tanzanian government.