Anildo Lopes Correia, 24, was arrested in Fall River Sunday night.
Two people are dead and three others in critical condition after a high-speed chase ended in a crash in Avon early Monday morning.
One person was killed in a huge brawl after a basketball game in Brockton Wednesday evening.
The threats are believed to be from the same source.
Brockton police are investigating racist and hate-filled graffiti found spray-painted on two homes in the city as hate crimes.
A Brockton man is facing charges of cocaine trafficking after police pulled him over on his moped.
The suspect in a fatal shooting in Brockton last year has been indicted on a murder charge.
Brockton residents are to vote on the casino proposal May 12.
Police say a 3-year-old boy was injured after falling from a window Saturday night in Brockton.
A 23-year-old man was killed in a shooting in Brockton Thursday morning, officials said.