Investigators in New Mexico are struggling to identify a mysterious substance that may have contributed to the deaths of three people and more than a dozen first responders being quarantined.
First responders rushed to a suspected drug overdose Wednesday and found four people unresponsive inside a home east of Albuquerque, in the rural town of Mountainair. Three people who were in the home died and the fourth was being treated at an Albuquerque hospital.
