Overview

• The confrontation began around 9:50 p.m. Wednesday when detail officers assisted security with removing Edwin Rivera from MGM Music Hall during Kevin Gates’s Fenway show.
• Prosecutors and police say Rivera threw a drink, threw a punch, grabbed an officer’s jacket, and then reached for the officer’s firearm as the struggle spilled outside.
• Police say Steven Costa, identified as Rivera’s cousin, intervened, ignored commands, attempted to strike an officer, and was subdued with a Taser.
• One officer was transported to a hospital for treatment, while Boston EMS evaluated both suspects who did not require hospitalization.
• Rivera and Costa were arraigned in Roxbury Municipal Court, released on personal recognizance, ordered to return Nov. 10, and Costa was transported on an outstanding warrant to Falmouth District Court; Rivera’s lawyer disputes the allegations as the case remains under investigation.