Investigators seek clues after California family found dead on hiking trail

Deaths of couple, their daughter and their dog remain unexplained, says sheriff's office

Investigators were searching for clues in the unexplained deaths of a California couple, their baby and the family dog in a remote area of the Sierra national forest.

John Gerrish, his wife, Ellen Chung, their one-year-old daughter, Muji, and their dog were found dead on a hiking trail in Mariposa county. A family friend had reported them missing Monday evening.