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Police have identified the Orem woman shot to death Monday in her apartment as 27-year-old Brittany Engstrom.

Later Monday, Engstrom's boyfriend, David Brigham Driscoll, 37, of Eagle Mountain, shot and killed himself during a standoff with police in Eagle Mountain.

Orem Police Lt. Craig Martinez had earlier described Driscoll as a "person of interest" in the homicide.

Driscoll had barricaded himself in a car in the Ranches Golf Club in Eagle Mountain while sheriff's deputies tried to speak with him, said Utah County Sheriff's Sgt. Spencer Cannon.

Driscoll, who has a military background, left officers concerned that he had multiple guns in the car, Cannon said. As sunset approached, deputies directed lights toward the car to prevent Driscoll from running away, Cannon said.

Instead, Driscoll — who had over the previous two hours told negotiators that he planned to surrender — shot himself at 5:20 p.m.

Orem police discovered the homicide of Driscoll's girlfriend about 2:15 p.m., when someone called officers to the woman's apartment, near 1700 South and 400 East, to check on her, Martinez said.

No one answered when officers knocked, but the door was unlocked, so officers cracked it open to announce they were there, Martinez said.

From the door, they could see Engstrom lying on the floor, Martinez said. She had suffered multiple gunshot wounds.

Driscoll, who was charged in September in 4th District Court with four counts of aggravated sexual abuse of a child, was scheduled to appear at a preliminary hearing Tuesday.

Charging documents state that Driscoll sexually abused a 5-year-old girl and a 7-year-old girl whom he had access to as a baby sitter. The 5-year-old in April reported the alleged abuse to her grandmother. During subsequent interviews at the Children's Justice Center, both girls disclosed the same allegations, charges state.

Evidence presented at the preliminary hearing would have determined whether Driscoll should stand trial on the charges.

Driscoll had no other criminal history beyond traffic tickets, according to a search of Utah court records.