Puerto Rico’s governor said Sunday he would cancel a $300 million reconstruction contract with a little-known Montana energy firm, saying the controversial agreement was detracting from the U.S. territory’s disaster response.

Gov. Ricardo Rosselló announced the cancellation in a press conference at the governor’s mansion after the Federal Emergency Management Agency and multiple members of Congress said they had significant concerns with the decision by Puerto Rico’s power authority to award the contract to Whitefish Energy Holdings LLC.

In a statement Friday, FEMA said it had questions about how the deal’s prices were negotiated and was talking with the public electricity monopoly known as Prepa and its legal advisers about how the contract was procured.

“I petitioned the board of Prepa to invoke the cancellation clause,” the governor said Sunday. “There is some ongoing work that needs to be finished, but I am invoking that cancellation clause.”

Questions surrounding the Whitefish deal intensified as federal officials began scrutinizing the U.S. territory’s disaster-recovery spending. More than a month after Hurricane Maria destroyed much of Puerto Rico’s electrical grid, service has been restored to less than a third of the island’s power customers.