Daily Star's biggest headlines straight to your inbox!Mystery surrounds the tragic deaths of British born software engineer John Gerrish, his wife Ellen Chung, and their 1-year-old daughter, Muji.The family’s dog was also found dead on the hiking trail near an area known as Devil’s Gulch in the Sierra National Forest in Central California on Monday morning.Police were unable to determine a cause of death, leading police to declare the area a hazmat scene, said Kristie Mitchell, a spokeswoman for the local sheriff’s office."It could be a carbon monoxide situation," she said. "That’s one of the reasons why we’re treating it as a hazmat situation."The three were found in the open air, not in a tent, adding to the confusion.
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