A 22-year-old woman died Tuesday after police said she tried to stop her car from rolling down her driveway.

Firefighters responded to a call for an extrication on the 2900 block of West 16th just after 6:30 a.m. Tuesday. 

When they arrived at the scene, they confirmed that the victim, later identified as Kaitlyn Rebstock, was trapped under her car. She was pronounced dead at the scene. Her cause of death was asphyxia from mechanical compression.

Police said she likely returned home from work around midnight. They think she parked her car on top of the steep driveway and it started rolling backward. She then tried to stop the car and was pinned underneath.

"I think the slope of the driveway played a big part," Sergeant Sean Nemec with the Spokane Police Department said. "I think her car gathered speed real quick and caught her off guard."

Her grandmother found her under the car in the morning and called police.

Rebstock was a 2008 graduate of Southridge High School in Kennewick, where she had been captain of the dance team.

She was living in Spokane with her fiancée and grandma and was studying to be a radiologist while working at a trucking company.