The grieving mother made the heart-breaking decision to take her 4-year-old son off life support.
Gene Hackman and Betsy Arakawa, alongside their dog, were found dead inside their New Mexico home.
Two teenagers were found dead from suspected carbon monoxide poisoning inside a car in the north suburbs early Sunday morning, officials said.
Two children were taken to the hospital after being exposed to carbon monoxide; Chicago police said one died on Monday.
The four victims found dead in a suspected carbon monoxide poisoning incident in Wakefield, New Hampshire on Christmas have been identified as a family from Newton, Massachusetts.
Real estate records show the home belongs to actor Marc Blucas and his wife, journalist and producer Ryan Haddon Blucas.