Police are investigating the circumstances that led up to a domestic-related homicide in Fort Collins early Tuesday morning.

Shortly after midnight, Fort Collins Police Department dispatch received a report of a shooting on the 3000 block of Blue Leaf Court. Officers responded to the residence and found a man who had died. The two people knew each other.

The police department identified a woman in custody as 63-year-old Nancy Baker. She was arrested on a first-degree murder charge and domestic violence charge. Baker was booked into the Larimer County Jail.

Anyone with information regarding this incident can contact Det. Siobhan Seymour at 970-416-2195 or, to remain anonymous, call Crime Stoppers of Larimer County at 970-221-6868 or www.stopcriminals.org.