Uber has said it is suspending self-driving car tests in all US cities after a fatal accident. A woman was hit by a car and killed as she crossed the street in Tempe, Arizona. Uber said it was cooperating with local authorities in Arizona following the crash. The death comes a year after Uber took its self-driving cars off the road following an accident that left a Volvo SUV on its side in Arizona. Uber chief executive Dara Khosrowshahi said the death was "incredibly sad news".

Uber temporarily hit the brakes on tests of its self-driving cars following a crash Friday evening in Tempe, AZ, that involved one of the company's autonomous vehicles. Vehicles in Arizona, Pittsburgh and San Francisco were still grounded Sunday while the investigation continued. "We are continuing to look into this incident and can confirm we had no backseat passengers in the vehicle," an Uber spokeswoman emailed USA TODAY on Sunday. The vehicle involved in the accident was in a self-driving mode. Fresco News posted pictures of the flipped Volvo SUV that was involved in the crash.