A self-driving car operated by Uber Technologies was involved in a crash in Arizona - the latest setback for a company reeling from multiple crises.

In a photo posted on Twitter, one of Uber's Volvo self-driving SUVs is pictured on its side next to another car with dents and smashed windows. An Uber spokeswoman confirmed the incident, and the veracity of the photo, in an email to Bloomberg News.

The spokeswoman could not immediately confirm if there were any injuries or whether the car was carrying passengers. Uber's self-driving cars began picking up customers in Arizona last month.

Uber, and Chief Executive Officer Travis Kalanick, are under scrutiny because of a series of scandals. The ride-hailing company has been accused of operating a sexist workplace. This month, the New York Times reported that Uber used a tool called Greyball to help drivers evade government regulators and enforcement officials. And Mr Kalanick said he needed "leadership help" after Bloomberg published a video showing him arguing with an Uber driver.

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Uber's self-driving car programme has also been mired in controversy. Waymo, Alphabet Inc.'s autonomous driving business, sued an Uber unit called Otto earlier this year for allegedly stealing designs for an important component of driverless cars known as lidar. Uber called the suit "baseless."