A Brockton man was also arrested, on charges he tried to keep police from arresting one of the teens, police say.
According to police, officers found Aryana Wilson, 18, of Dorchester, with a loaded .45-caliber Springfield Armory XD-S handgun. Police said they were led to Wilson as part of an investigation, but did not specify if it was related to the double murders. Wilson was arrested without incident, but a 17-year-old from Brockton tried to flee - only to be captured shortly after by BPD and BHA officers.
Officers also arrested Anthony Upchurch, 34, of Brockton, who had physically assaulted two of the officers and actively interfered with them as they attempted to place the juvenile male in custody.
Wilson will be arraigned on charges on unlawful possession of a firearm, unlawful possession of ammunition, carrying a loaded firearm and unlicensed operation of a motor vehicle. The 17-year-old, not named because of his age, will be arraigned on charges of being delinquent for unlawful possession of a firearm, unlawful possession of ammunition and resisting arrest. Upchurch will be charged with two counts of assault and battery on a police officer and resisting arrest.
The arrests are the latest at what has long been a violence-plagued housing complex. In January, nine alleged members of the Heath Street Gang were arrested after a two-year investigation into crime at the complex, that in just ten months last year included 36 incidents of shots fired, eight non-fatal shootings, one homicide, 20 drug-related arrests and 25 robberies.