A Zelienople mother of four is jailed following her arrest Tuesday for allegedly supplying heroin to her daughter and a man who both later overdosed on the drug that may be part of bad batch of dope sweeping through Western Pennsylvania.

Authorities suspect the victims nearly died last week after taking the heroin in stamp bags marked “Theraflu.”

The batch is believed to be a deadly mix of heroin and the potent narcotic painkiller Fentanyl and could be responsible for up to 22 fatal overdoses in the past two weeks.

State narcotics agents, members of the Butler County Drug Task Force and Zelienople police Tuesday arrested 41-year-old April L. Opperman at her three-story rental home on West Beaver Street.

A warrant search of the house turned up 18 bags of heroin stamped with the name “Theraflu” inside a brown vitamin bottle, according to court documents.

The bottle, labeled “dandelion root,” was found in Opperman’s top-floor bedroom.

The defendant was home along with her longtime boyfriend and her children, ages 9 to 20, who also live there, when officers served the warrant about 5 p.m.

“I think she was a little shocked when she saw us,” county Detective Tim Fennell, who heads the Butler County Drug Task Force, said of Opperman.

He described her demeanor as “quiet and resigned” during the more than two-hour sweep of her home.

During the search, authorities said, state narcotics officers spoke to the defendant but it was not known what, if any, information she provided.

A message left Wednesday for agent Douglas Brink of the Pennsylvania Attorney General’s Bureau of Narcotics Investigation and Drug Control office in Butler Township was not returned.

Opperman later was arraigned on charges of possession with intent to deliver a controlled substance, a felony, and misdemeanor possession.

She remains in Butler County Prison on $100,000 bail. It was not immediately known if she has an attorney.

Her arrest followed a pair of heroin overdoses that happened on consecutive days last weekend in Zelienople.

Borough police about 8:10 p.m. Friday were called to the defendant’s home for a reported overdose of a girl, who turned out to be Opperman’s 17-year-old daughter, authorities said.

Harmony EMS paramedics also were called and found the girl unconscious and in respiratory distress.

The teen was administered a life-saving dose of the opiate overdose antidote Narcan.

The first-responding police officer spotted “in plain view” 20 stamp bags marked “Theraflu” as well as syringes and other drug paraphernalia, documents said.

The next day police and Harmony EMS got another call for a drug overdose at a home in Zelienople.

There, paramedics again had to use Narcan to revive the victim, a 38-year-old man who lives at the house.

The man told rescuers that he had used heroin from bags stamped “Theraflu.”

He initially provided a description of the home on Beaver Street where he claimed he bought the drugs. That description matched Opperman’s house, investigators said,

During a follow-up interview that evening at UPMC Passavant Cranberry, he admitted he had purchased the heroin from Opperman at her home within the past 48 hours, documents said.

“According to the patient, Opperman said it was really good (quality) heroin,” a police affidavit said.

Additionally, the man revealed that he noticed several bundles of heroin at Opperman’s home when he went there. There are 10 bags of heroin to a bundle.

He said he believed that Opperman sells about three bundles of heroin a day.

Zelienople police Chief Jim Miller admitted that he suspected Opperman of dealing out of her home for some time. But his department was unable to nail her with the evidence, he said.

He said at the time of Tuesday’s arrest, police were conducting a drug investigation targeting the defendant.

“We’ve gotten a lot of reports of her selling drugs there over the years,” Miller said. “On a local level, I’m glad she’s off the street and no longer selling in Zelienople.”

Pennsylvania Attorney General Kathleen Kane announced Monday that her office has teamed up with local police and narcotics agents to find the distributors of the batch of suspected tainted heroin.

Authorities believe nearly two dozen heroin users in Western Pennsylvania have died and many more have overdosed from the heroin sold in bags marked “Theraflu,” “Bud Ice” and “Income Tax.”

Most of the deaths have occurred in Allegheny County; however, in Butler County, the weekend death of a 41-year-old Middlesex Township man at his trailer home may be linked to the same lethal batch.

The man’s wife told investigators that she had seen the bags he brought home Saturday. They were stamped, “Theraflu,” said township police Sgt. Randy Ruediger.

Armstrong County authorities are investigating their own case possibly tied to the toxic batch.

An empty stamp bag of “Theraflu” was recovered from a 32-year-old woman who died Jan. 20 in Rayburn Township near Kittanning, said Armstrong County Coroner Brian Myers.

Middlesex police and state police in Kittanning are awaiting toxicology reports in the cases in Butler and Armstrong counties.

Some emergency responders in Butler County, meanwhile, have seen a spike in overdose cases since the suspected bad batch of heroin turned up here earlier this month.

But others have not.

“Heroin is quite a problem in Butler,” said Dennis Bacher, chief executive officer for the Butler Ambulance Service, “so calls for overdoses are nothing unusual.”

He said his service this month has responded to four heroin OD calls, which is fewer than the six calls logged in each of the last three months of 2013.

Harmony EMS, however, has seen a definite jump in overdose cases in January, said paramedic supervisor Brian Dambaugh,

Before getting the two overdose calls in Zelienople, the Harmony squad was called for an earlier one this month in Connoquenessing Township.

Investigators were not aware if any of the other overdoses in Butler County have been linked to Fentanyl-laced heroin.

A UPMC Passavant Cranberry spokeswoman said the hospital does not disclose information about treatment cases.

Butler Memorial Hospital officials were unavailable for comment.