A 49-year-old woman died Sunday afternoon in Rogers after she opened the passenger side door of a moving pickup truck in Rogers and fell or hurled herself to her death, police said.

The truck was going between 55 and 60 miles per hour when the woman fell out of the northbound truck and hit her head on the pavement about 4:30 p.m. on Brockton Lane in the vicinity of 147th Avenue, said Rogers Police Chief Jeff Beahen.

Witnesses, including a family heading in the opposite direction that saw the incident, stopped to render aid but were unsuccessful at keeping her alive. Air care and an ambulance were canceled after the woman died at the scene, Beahen said.

The name of the woman, who was not carrying identification, has not been made public.

The woman and the 54-year-old male driver believed to be her boyfriend had been at a Mother's Day gathering in Minnetonka and were headed back to his home in Otsego when the woman "suddenly opened the door and fell or hurled out of the truck," Beahen said.

There was no indication that drugs or alcohol played a part in the incident, and the driver is cooperating, Beahen said.

A team from the Minnesota State Patrol crash reconstruction team is helping with the investigation. The pickup has been impounded and a forensics test will be conducted Monday afternoon, Beahen said.