The FBI is investigating the $300 million contract a tiny Montana energy firm signed with Puerto Rico’s government power company, according to a report in the Wall Street Journal. The probe will investigate the deal inked between the U.S. territory’s public-power monopoly, called Prepa, and Whitefish Energy Holdings. The company had at least 350 workers on the ground to rebuild electrical lines that were destroyed during the catastrophic Hurricane Maria. Puerto Rico Gov. Ricardo Rosselló reportedly canceled the contract on Sunday, announcing that issues between the island and the company had become a significant distraction from the efforts to rebuild the commonwealth’s electrical grid.