The federal auditor in 2011 accused RIL of violating the terms of contract for the KG-D6 block off the AP coast but did not talk about loss to exchequer or impact on gas price.
The CAG report on a special audit of RIL books for 2006-2008, when most major equipment and services were contracted, let RIL off the hook on artificially jacking up the cost of bringing the field into production.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/ril-violated-contract-govt-said-cag
[2] http://admin.indiaenvironmentportal.org.in/category/author/sanjay-dutta
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/andhra-pradesh
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-gas
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fuel-pricing
[7] http://admin.indiaenvironmentportal.org.in/thesaurus/comptroller-and-auditor-general-india-cag
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/petrochemical-industry
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-gas-exploration
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ministry-petroleum-and-natural-gas
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/corruption
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy