People enter the headquarters of Uber in San Francisco on...

People enter the headquarters of Uber in San Francisco on March 1, 2017. Credit: AP/Eric Risberg

TEMPE, Ariz. —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 a Phoenix suburb 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.

Uber CEO Dara Khosrowshahi expressed condolences on his Twitter account. The company is working with local law enforcement on the investigation.

On the latest episode of "Sarra Sounds Off," we look at East Islip baseball's inspirational comeback story, Jared Valluzzi has the plays of the week and Tess Ferguson breaks down the top defensive players in girls lacrosse. 

Sarra Sounds Off Ep. 35: EI baseball, girls lacrosse and plays of the week On the latest episode of "Sarra Sounds Off," we look at East Islip baseball's inspirational comeback story, Jared Valluzzi has the plays of the week and Tess Ferguson breaks down the top defensive players in girls lacrosse.

On the latest episode of "Sarra Sounds Off," we look at East Islip baseball's inspirational comeback story, Jared Valluzzi has the plays of the week and Tess Ferguson breaks down the top defensive players in girls lacrosse. 

Sarra Sounds Off Ep. 35: EI baseball, girls lacrosse and plays of the week On the latest episode of "Sarra Sounds Off," we look at East Islip baseball's inspirational comeback story, Jared Valluzzi has the plays of the week and Tess Ferguson breaks down the top defensive players in girls lacrosse.

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