CAMBRIDGE, Mass. (AP) — A Massachusetts Uber driver is accused of sexually assaulting a woman who had summoned the ride-sharing service.

Authorities say 46-year-old Alejandro Done was arraigned Wednesday in Cambridge District Court. The Boston man pleaded not guilty to charges including rape and kidnapping.

Investigators say Done picked up the woman in Boston on Dec. 6. She had summoned an Uber driver to take her to her Cambridge home.

Uber customers use a smartphone application to arrange and pay for rides with nearby drivers.

The driver allegedly told the woman that he would need a cash payment, so he took her to an ATM.

Authorities say he then drove her to a secluded location and sexually assaulted her.

Uber says it's working closely with law enforcement to assist in the investigation.