Mass. State Police, D-E-A agents and Brockton Police capped a two-month investigation this week with the arrests of four men, and the seizure of three guns, ammunition and drugs.

Search warrents were carried out at four locations on Warren Avenue in Brockton.

Arrested were 28 year old Steven Gomes DePina, and 33 year old Joao Pires-DePina, both of Brockton, and 32 year old Miguel Fidalgo and 25 year old Joshua Pires, both of Dorchester.

The weapons seized included a Glock 23, 40-caliber handgun, a Smith and Wesson 45 caliber, and a 40-caliber Highpoint handgun. None of the suspects had firearms licenses.

Also recovered were digital scales, plastic bags and other items used in the packaging of illegal drugs.