A controlled burn in northern lower Michigan has grown into a wildfire that has affected nearly 6,000 acres and forced evacuations in multiple communities, state police said. Officials with the U.S. Forest Service, who started what was supposed to be a controlled burn, remained on the scene alongside multiple agencies past 9 p.m., said Joshua Veal, public affairs officer for the Huron-Manistee National Forests, where the fire originated. Multiple aircraft, including tankers, also were involved in the efforts, he added. "We're working really hard on our side to catch it and get it suppressed." There were no immediate reports of injuries or structures lost, he said. It wasn't immediately clear how many people had been evacuated.