LONDON: Uber says it has suspended all of its self-driving testing following what is believed to be the first fatal pedestrian accident involving the vehicles. The self-driving testing has been taking place in Phoenix, Pittsburgh, San Francisco and Toronto. Automakers and tech companies are competing to be first with the technology. Police in the Phoenix suburb of Tempe, Arizona say one of Uber’s self-driving vehicles struck and killed a pedestrian on Sunday night. Investigators say the vehicle was in autonomous mode with an operator behind the wheel when the woman walking outside of a crosswalk was hit. The woman died of her injuries at a hospital and her name was not made public. Uber CEO Dara Khosrowshahi expressed condolences on his Twitter account: “Some incredibly sad news out of Arizona. We’re thinking of the victim’s family as we work with local law enforcement to understand what happened.” The US National Highway Traffic Safety Administration and the National Transportation Safety Board said they are sending teams to Tempe, to investigate the accident. The NHTSA said in a statement it is “in contact with Uber, Volvo, federal, state and local authorities regarding the incident” and will take appropriate action. “Our hearts go out to the victim’s family,” said an Uber spokesperson. “We are fully cooperating with local authorities in their investigation of this incident.”