Investigators search for answers to deadly phosphine gas poisoning (KSL Salt Lake City)
A 4-year-old Layton girl died over the weekend from what's believed to have been exposure to a gas used to kill rodents. Now her 15-month-old sister is in intensive care for the same thing, and investigators still don't know how the gas leaked into their home.
Tags: City Year, Gas Poisoning, Intensive Care, Investigators, Phosphine Gas, Rodents, Salt Lake City