WASHINGTON, Pa. (AP) — Authorities say an explosion believed to have been caused by a gas leak reduced a Washington County home to a pile of rubble and injured five people. The (Washington) Observer-Reporter reports that Wednesday afternoon’s blast near a high school in North Franklin Township was widely felt around the area. Township supervisor Bob Sabot said he was told three firefighters, the homeowner and a neighbor were injured but none of the injuries appeared life-threatening.