Cairn India, a unit of British exploration firm Cairn Energy Plc, said it plans to drill for oil and natural gas deposits off Sri Lanka's northwestern coast in July.
In 2008, Cain invested $100 million, spread over three years, to conduct detailed seismic studies and drilling three wells off the coast of Mannar.
“Frontier exploration drilling in Sri Lanka is planned to commence in July,” a company statement said.