TEMPE, Arizona – The Tempe Police Department says a woman is dead after being hit by a Uber self-driving vehicle overnight, according to 12news.

According to police, the Uber vehicle was traveling northbound just south of Curry Road in autonomous mode with an operator in the driver’s seat.

The woman attempted to cross the road outside of the crosswalk when she was struck, police said. She was taken to a hospital where she later died.

Her name has not been released and the investigation is ongoing. Police said Uber is assisting in the investigation.

This is believed to be the first pedestrian death from a self-driving car, according to the New York Times.

“Our hearts go out to the victim’s family,” Uber said in a statement. “We are fully cooperating with local authorities in their investigation of this incident.”

Nearly a year ago, an Uber self-driving vehicle was involved in a different crash when an Uber rolled onto its side. Nobody was injured in that crash, according to Tempe PD.