After a standoff that lasted nearly three-hours, 12 long rifles and a handgun were found inside a Forest Street home.
Bridgewater police officers and a SWAT team surrounded the house after a woman went to the Bridgewater police station Monday at 4p.m. and said her 25-year-old son, Thomas Viera, threatened her with two steak knives and also threatened to commit suicide.
According to police, Viera pointed a gun at the SWAT unit through the front screen door several times.
Negotiators were able to persuade him to exit the house but after he failed to comply with other demands, Viera was tased and arrested.
He was taken to Brockton Hospital for psychological evaluations.
Viera is facing two charges: assault with a dangerous weapon and failure to secure firearms.