7 August 2012. Officials from Sri Lanka’s state-run petroleum corporation, Ceylon Petroleum Corporation (CPC), have been summoned before parliament following alleged imports of substandard fuel, opposition United National Party (UNP) MP Ravi Karunanayake said on Monday. Karunanayake who is a member of the Committee on Public Enterprises (COPE) said it will investigate claims of substandard imports of fuel that resulted in the stalling of more than 100 buses and several trains last week. The committee appointed to investigate decided to delist Vitol, which is one of the largest oil traders in the world. Last year the Sri Lankan government withheld payment from Emirates National Oil Company after consumers lodged several thousand complaints of substandard fuel.