Uber has been testing self-driving cars in multiple cities, but the entire program has been suspended after a fatality.

A self-driving Ford Fusion hybrid car is test driven, Thursday, Aug. 18, 2016, in Pittsburgh. Uber said that passengers in Pittsburgh will be able to summon rides in self-driving cars with the touch of a smartphone button in the next several weeks. The high-tech ride-hailing company said that an unspecified number of autonomous Ford Fusions with human backup drivers will pick up passengers just like normal Uber vehicles. Riders will be able to opt in if they want a self-driving car, and rides will be free to those willing to do it, spokesman Matt Kallman said. (AP Photo/Jared Wickerham)

Uber’s program has been suspended in Pittsburgh, San Francisco, Toronto, and Phoenix, after a woman was killed in Tempe, Arizona. The woman was a pedestrian, apparently hit by an Uber self-driving car.

Uber’s initial statement:

Our hearts go out to the victim’s family. We are fully cooperating with local authorities in their investigation of this incident.