ANSON — Five people were arrested Tuesday after investigators searched a home in Anson and seized property that was reportedly stolen in Winslow, several firearms and illegal drugs, including more than 5 pounds of fentanyl with a street value of more than $350,000, Somerset County Sheriff Dale Lancaster said Thursday.

Nine sheriff’s deputies, two Winslow police officers and others served a search warrant at the house at 26A Cross Road, Lancaster said.

In addition to the fentanyl, the search turned up more than 2 pounds of cocaine, nearly a half-pound of methamphetamine, oxycodone and other drugs, according to Lancaster.

Winslow police are involved because at least some of the people arrested this week are believed to be involved in a series of burglaries at the Marden’s Surplus & Salvage warehouse at 100 Benton Ave. in Winslow, Lancaster said.

The home that was searched in Anson was the residence of James Gordon, 31, who was charged with aggravated trafficking in scheduled drugs and possession of a firearm by a prohibited person.

Lancaster said law enforcement officers searched the home after officials received tips about repeated drug and firearm offenses occurring there.

Along with Gordon, officers arrested:

• Harold Andujar-Pimentel, 24, of the Hyde Park neighborhood of Boston on a charge of aggravated trafficking in scheduled drugs. He is being held without bail on federal charges, but specifics of those charges were not clear Thursday and Lancaster said he could not comment.

• Seth Thomas, 26, of Anson on charges of aggravated trafficking in scheduled drugs and violating conditions of release.

• Joelle Serafino, 27, of Anson on a charge of aggravated trafficking in scheduled drugs.

• Shawn Peary, 32, of Anson on charges of aggravated trafficking in scheduled drugs, possession of a firearm by a prohibited person, violation of a protection order and violating conditions of release.

Gordon, Thomas, Serafino and Peary are scheduled to appear Feb. 9 at a Skowhegan courtroom, Lancaster said.

Chief Leonard Macdaid of the Winslow Police Department was not available Thursday to comment on his department’s investigation into the Marden’s burglaries.

Lancaster described as “substantial” the quantity of drugs reportedly seized from the Anson home.

The flow of illicit drugs into Somerset County is “consuming a lot of resources to investigate,” he said, adding the worsening problem includes the seizure of drugs, drug overdoses, people stealing and burglarizing to feed drug habits and related issues.

“Once you get hooked on opiates, because of the effect they have on the brain, it’s almost impossible to stop on your own,” Lancaster said. “I’m afraid we’re going to lose a generation to this.”