Harbir Parmar, 25, pleaded guilty to one count of kidnapping and one count of wire fraud in White Plains federal court earlier this week, prosecutors said.
The incident happened on February 21 during which a female passenger in his car riding from Manhattan to her home in White Plains fell asleep - only to awake with "Parmar's hand under her shirt", according to court records cited by the US media.
Complaining to Uber, she discovered the trip's destination had been changed to Boston, incurring a $1,047 fare, the New York Post reported.
Parmar was arrested in October last year. He will be sentenced in June this year and could face life imprisonment for the kidnapping offence.
He confessed to a series of ride-rigging offences, which had netted him more than $3,600 in bogus charges, officials said.
"In addition, he charged many of his ridesharing customers with fraudulent fees. He admitted his guilt in open court, and will now be held accountable for his brazen crimes."
"As soon as we became aware, we immediately removed this individual's access to the platform."
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