AMHERST, Mass. — University of Massachusetts police have charged a Holyoke man they say claimed to be a driver for the Uber ride-hailing service and then sexually assaulted a woman he picked up.

Samuel Texidor was held without bail after pleading not guilty to indecent assault and battery this week.

UMass-Amherst police say Texidor approached the UMass student at about 3:30 p.m. Saturday and identified himself as an Uber driver. He then allegedly offered the woman a free ride from an off-campus apartment complex to an on-campus residence.

During the ride, the 18-year-old Texidor allegedly assaulted the woman, who then demanded that the driver stop the vehicle so she could get out.

Police say they are investigating whether Texidor offered other students free rides. It could not immediately be determined who represented Texidor.