WOODINVILLE, Wash. — Explosive devices were found inside luxury houses set ablaze Monday morning outside of Seattle, and police suspected that a well-known eco-terrorism group ignited the fires. The multi-million-dollar development known as "Street of Dreams" in Woodinville, Wash., burst into flames in the early morning hours, and Snohomish County crews fought to contain the blaze. The Earth Liberation Front, known for violent acts in the name of environmentalism, left a sign at the scene and was suspected to have set fire to the swanky, newly built neighborhood. The Federal Bureau of Investigation released a statement saying that the FBI,...