A level 2 sex offender was arrested in the MBTA's Back Bay Station for open and gross lewdness, according to Transit Police.
Officials responded to a report of a male masturbating in the men's restroom around 5:30 p.m. Friday. Officials found the man, identified as 49-year-old Steven Flynn of Jamaica Plain, in the restroom with the stall door open and his pants off.
Once clothed, Flynn gave officers a false name and birth date.
Flynn was placed in custody and taken to the Transit Police Headquarters.
Flynn will be arraigned Monday in Boston Municipal Court-Central Division for open and gross lewdness.