A Metro-North employee training to be an engineer was arrested Tuesday after a woman told police he performed a lewd act over her while she was asleep on a train, sources tell NBC 4 New York.

The woman was on the 7:35 a.m. train from Grand Central Terminal to New Haven when she says she awoke to noises above her and found evidence of the act on her body, sources said.

The train was halted at Fairfield for nearly an hour while police investigated. The 34-year-old suspect was found on a street near the station, the MTA said.

The man, who lives in Brooklyn, was hired as a coach cleaner in October 2011 and has been in an engineer training program since March 2013, the MTA said. He has been suspended without pay.

The worker was charged with public indecency and breach of peace, both misdemeanors. He was released on $1,000 bond, police said.