Police in Waterbury, Connecticut said they arrested 50 people and seized drugs and guns during an investigation spurred by heroin-related deaths.
Authorities began the raids at 5 a.m. Friday after having obtained 92 arrest warrants for 52 people. Officials said 135 law enforcement officials took part.
Forty-one of the 52 people who were sought were arrested, and police took another nine people into custody on drug-related charges, authorities said.
Officials said they seized 8 ounces of raw heroin, several thousand bags of heroin packaged for sale, more than $15,000 in cash, two cars, two handguns and one rifle.
Authorities said the investigation into heroin trafficking began in September and is continuing.