NEWTON - 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.

Carbon monoxide can be more of a risk during the winter; doors and windows tend to remain closed, and there can be periods where there isn’t as much air circulation as there is during warmer months.

Three people died Saturday of apparent carbon monoxide poisoning on a boat at Saguaro Lake. Carbon monoxide is an odorless and colorless gas that kills more than 400 people every year, according ...