PITTSFIELD, Mass.— Local law enforcement agencies seized almost a kilo of heroin, along with guns and other substances, during raids in October. 

On Thursday, Berkshire District Attorney Timothy Shugrue said this interrupted a "large-scale" drug trafficking operation. In total, about 542 grams of cocaine and 1,083 grams of heroin, firearms, and other paraphernalia were seized.

Nine people, including a juvenile, were charged with drug trafficking and/or illegal firearms.

"We're catching drugs and not a lot of cash, so it's not sold. That means that we're getting the drugs before it's sold. Here, almost a full kilo. That tells me it's not in the streets. I see a direct correlation with that. During those months, I'll see the overdose deaths go down, and that's significant to me," he said in a press conference at the Berkshire DA's office. 

"But we have to keep fighting it because we have to deal with the addiction issue as well, which we're dealing with in a different light, but we have to get rid of the supply that's coming in, and we see that supply go down. I know that you've got $250,000 worth of heroin that's not on the streets today, and I'm happy with that."

After a lengthy investigation, search warrants were executed on Oct. 15 and Oct. 22. 

During the Oct. 15 operation, 542 grams of cocaine (with a street value of $54,000) and 83 grams of heroin (with a street value of $20,000) were seized. 

Police also confiscated three guns: a 9 mm handgun with nine rounds, a Glock 19, a .45 caliber semi-automatic handgun with six rounds, four loose rounds of ammunition, a 10-round feeding device, two boxes of 9mm ammunition, and a rifle scope. 

Seven individuals were arrested on charges of drug trafficking and possession of illegal firearms.