As Delhi continues to struggle with poor air quality, the chairman of the Supreme Court-empowered environment body formed to keep the air pollution levels under check has requested the people in the national capital to not use their diesel vehicles. Dr Bhure Lal, Chairman of the Environment Pollution (Prevention and Control) Authority (EPCA), told NDTV that diesel vehicles are one of the biggest contributors to air pollution in Delhi. He also explained why the EPCA has not been filing criminal complaints against air pollution violations.