FROSTPROOF, Fla. – Investigators are now offering a $30,000 reward for clues in a mysterious triple homicide in Polk County.According to the Polk County Sheriff’s Office, Damion Tillman, 23, Brandon Rollins, 27, and Keven Springfield, 30, were found dead late Friday in Frostproof, where the best friends had met to go on a fishing trip.Deputies said Rollins had called his dad and said, “Help.”“His dad knew Brandon had gone fishing with his two friends, Kevin and Damion.