The 20-year-old woman who was riding on a mattress on top of a van fell from the roof of the vehicle and struck the pavement, Prince William County Police said.

WASHINGTON — A 20-year-old woman who was riding on a mattress on top of a van in Haymarket, Virginia, died early Friday morning after she and the mattress fell from the roof of the moving vehicle, Prince William County Police said.

Police believe Sidney Zelaya Gonzalez, of Culpeper, Virginia, and the driver of the van — a 41-year-old woman who has not been identified — were attempting to transport the mattress a short distance when Gonzalez fell and hit the pavement, police said.

“This was not a joy ride,” Nathan Probus, a public information officer with Prince William County told WTOP.

Probus said police were called to Bent Grass Drive and Waverly Farm Drive in Haymarket about 6:42 a.m. Friday. Gonzalez was pronounced dead at the scene.

As of now, no charges have been filed against the driver of the van. Police said speed and alcohol do not appear to be factors in the crash.

WTOP’s Michelle Basch contributed to this report.