A 77-year-old man died after police say he fell into a stream behind a Moon Township home. Police were called Thursday afternoon to the home on Downing Drive. When officers arrived they found the victim, William Kriger, face down in a stream. The officers pulled Kriger from the stream and administered CPR, but he was pronounced dead at the scene. Police said Kriger was riding a garden tractor above a concrete wall on the side of the stream. The officers found the tractor wasn’t running, but the key was still in the ignition. Police said it appeared Kriger either had a medical episode and fell off the tractor or he slipped off the seat and fell into the stream striking his head.