Authorities Sunday verified four people were killed when their helicopter crashed into the Verde River in Arizona. Dwight D\'Evelyn, a spokesman for the Yavapai County Sheriff\'s Department, said the aircraft likely went down sometime Saturday, The Arizona Republic reported. County deputies hiked to the remote scene about 6 miles south of Camp Verde and confirmed all four people aboard the helicopter were dead, the newspaper said. The pilot was identified as Raymond P. Perry, 70, of Phoenix. The Republic said he and Donna J. Perry, were listed on Arizona Corporation Commission records as the helicopter\'s owners. D\'Evelyn said the other victims were Karen Stinn, 68, of Cave Creek, and Mike Dunaway, 63, and his wife Linda Dunaway, 64, of Glendale. The helicopter was on a flight from Sedona to the Scottsdale Airport, authorities said. The cause of the crash was under investigation.