An influential politician in the Philippines, who has been a cheerleader for natural gas power, is behind a company that planned to make a fortune from it, an Associated Press investigation of thousands of pages of documents has found.

Gov. Hermilando Mandanas of Batangas province and his late wife stood to profit from a buildout of liquified natural gas power — he owned the largest share in a real estate firm that soared in value as energy companies moved in, while he promoted the expansion in media interviews and public events. The firm also launched its own natural gas project.

Experts in government ethics deplored the scenario, with one environmental law advocate calling for an investigation into Mandanas. In an interview with the AP, Mandanas denied his associated businesses are involved with the buildout and called natural gas the best choice for the country.