Arizona Gov. Doug Ducey suspended Uber’s self-driving vehicle testing privileges Monday. After a pedestrian fatality in a Phoenix suburb last week, the governor told Uber to wait.

Ducey told the company CEO Dara Khosrowshahi that video footage of the crash raised concerns about the company’s ability to safely test its technology in Arizona. He said he expects public safety to be the top priority for those who operate self-driving cars.

“The incident that took place on March 18 is an unquestionable failure to comply with this expectation,” Ducey said.

The move by the Republican governor marks a major step back from his embrace of self-driving vehicles. He previously welcomed Uber and other autonomous vehicle companies to use Arizona as a place for testing under few regulations. In early March, he authorized self-driving vehicle companies to run tests without a person in the car to act as a safety operator.

Self-Driving Uber Car Killed Arizona Woman

A 22-second video showing a woman walking from a darkened area onto a street just before an SUV strikes her. The Volvo was in a self-driving mode with a human backup driver at the wheel when it struck 49-year-old Elaine Herzberg, police said.

Uber’s human backup driver appears in the video to be looking down before the crash and appears startled about the time of the impact.

Experts who viewed the video told The Associated Press that the SUV’s sensors should have seen the woman pushing a bicycle and braked before the impact.

The company suspended its self-driving vehicle testing processes in Arizona, San Francisco, Pittsburgh, and Toronto.

On Friday, a new report was released that the company’s own documents showed the testing program was rife with issues. They included trouble driving through construction zones and requiring far more human intervention than competing companies.

In Arizona, companies such as Uber only need to carry minimum liability insurance to operate self-driving cars. They are not required to track crashes or report any information to the state.

Uber did not immediately respond to the request.