UPDATE: Released on personal recognizance at his arraignment, Suffolk County DA's office reports.
Maybe he meant well, like other people at the rolling rally tossing beers up to Red Sox players, but whatever the intent, Boston Police report a Sandwich resident faces arraignment on charges that include assault and battery with a dangerous weapon for an incident during the parade on Boylston Street in Copley Square around 11:40 a.m.
Officers placed the suspect in custody after observing him throw an unopened can of beer at one of the Duck Boats, striking an adult male party on board. The victim was not injured as a result of the incident.
In addition to the A&B charge, Patrick Connolly, 19, also faces arraignment on charges of being a minor in possession of alcohol and disorderly conduct.