A Mattapan man was arrested last Tuesday for allegedly pulling out his penis and masturbating in front of a woman on the Orange Line.
Ramon Antonio Baez, 25, was charged with open and gross lewdness after police tracked him down, on Thursday. The victim snapped a photograph of Baez during the incident, and handed it over to police.
The same day Baez was arrested, a Cambridge woman allegedly spit and assaulted a man with a knife on the MBTA Red Line.
Transit police said Kelly Madden, 49, pulled a knife and spat on a man on an outbound Red Line train as it pulled into Central Square MBTA Station.
The alleged attack happened after the victim asked Madden to not speak so loudly on her cellphone.
Transit Police posted a photograph of the Madden on their website, and tips from the public led to the woman’s arrest. She is charged with assault with a dangerous weapon, in addition to assault and battery.