A Salem man pleaded not guilty today to a charge that he engaged in lewd behavior on a commuter rail train Saturday.

Adam Morrissey, 19, was arraigned in Salem District Court on a charge of open and gross lewdness, and is being held on $1,000 cash bail. He is scheduled to return to court for a pretrial hearing on Feb. 21.

Morrissey was arrested by MBTA Transit Police detectives on Washington Street in Gloucester at 3:30 p.m. Tuesday. He faces a charge of open and gross lewdness, Transit Police said.

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Morrisey was first reported to Transit Police by a female passenger who said she saw him touching himself inappropriately while riding the inbound commuter rail train at some point between the West Gloucester and Swampscott stations at 8 p.m. Saturday.

Transit Police detectives received numerous tips after posting an image of Morrissey taken by the female passenger to the agency’s website.