A woman has died after her car flew off the fourth floor of a parking structure for a medical facility in the city of Orange on Friday morning, police said.

Around 9:20 a.m., first responders were called out to the area of La Veta Avenue and Pepper Street, where they found a crashed Toyota sedan next to a parking structure, according to Orange Police Department Sgt. Phil McMullin.

The car had gone off the side of the structure’s fourth floor, landed on the ground and flipped over, killing the woman inside, he said.

Bystanders worked together to upright the vehicle before police and Orange Fire Department personnel responded, according to McMullin.

Despite their efforts, the woman was pronounced dead at the scene. Authorities have not identified her, describing the victim only as “elderly.”

The crash is under investigation and a cause is not yet known, but one possibility being looked at is whether the driver mistakenly put her foot on the gas instead of the brake.

The parking structure where the incident took place is for the St. Joseph Outpatient Pavilion, located across the street from Providence St. Joseph Hospital.

A section of the concrete wall on the structure’s fourth floor was damaged in the crash, Sky5 aerial video showed, and fire crews remained on scene hours after the incident as they worked to secure the area.