The Essex County District Attorney's Office said in a news release that the county's drug task force, working in conjunction with federal authorities, seized the drugs during an unloading operation this weekend, the Boston Herald reported Sunday.

Essex County District Attorney Jon Blodgett credited everyone involved with Saturday's raid, which reportedly followed a lengthy undercover narcotics operation.

"It was a multistate, multifaceted enterprise, so it was a long investigation," Blodgett said. "These people were major players in the drug trade."

The attorney's office said five men and a woman were also arrested in the raid. Those individuals face up to 20 years in prison if convicted on drug trafficking charges, the news release said.

Blodgett told the Herald Saturday's raid would likely prompt more arrests as police are investigating related "offshoots" in the criminal case.