(CNN) A man accused of undressing and fondling a Spirit Airlines passenger while she was asleep could spend the rest of his life behind bars.

Prabhu Ramamoorthy, 35, was convicted of sexual abuse on board an aircraft for digitally penetrating the victim, the US Attorney's Office for the Eastern District of Michigan said.

His sentencing date is set for December 12, and he could face up to life in prison. After finishing his sentence, Ramamoorthy -- who is in the United States on a work visa -- will be deported to his home country. The criminal complaint against Ramamoorthy did not specify his home country.

Attorneys for Ramamoorthy did not immediately respond to CNN's request for comment.

The abuse happened in January during an overnight flight from Las Vegas to Detroit.

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