On April 12, 870,000 customers in Puerto Rico lost power when a tree fell on a major power line near the town of Cayey while workers were clearing vegetation. A week later, on April 18, power was lost to all of Puerto Rico when an excavator repairing 2017 damage from Hurricane Maria hit a line connecting two major power plants. After a request by Governor Ricardo Rossello, the government electricity monopoly, PREPA, terminated its relationship with D. Grimm, the subcontractor responsible for both incidents.