ORRINGTON, Maine — A New York City woman is the second person to be arrested and charged with trafficking drugs as part of the investigation into a July 22 arson attempt and reports of gunshots fired at a Johnson Mill Road property.

Ana De Los Santos, 23, was arrested Thursday after officers with the Maine Drug Enforcement Agency searched her leased residence at 45 West Side Drive on Verona Island, MDEA Division Commander Darrell Crandall said Friday afternoon.

“Over 60 grams of crack cocaine valued at $6,600 and a small-caliber handgun were located inside the residence,” Crandall said.

De Los Santos, whose residence was not occupied when police conducted their search, was arrested when she returned to the property and taken to the Hancock County Jail. Her initial bail was set at $5,000, according to Crandall, but that amount was reduced to $3,700 during her initial appearance in court on Friday, a Hancock County Jail official said.

De Los Santos was bailed out shortly before 2 p.m. Friday, according to the jail.

She faces a charge of Class A aggravated trafficking in cocaine because of the quantity of drugs involved, according to Crandall.

Police obtained a search warrant for De Los Santos’ residence after executing another warrant to search the Johnson Mill Road home that was the target of arsonists and gunmen at around 2:15 a.m. July 22. That led to the arrest of 46-year-old David Ireland, the renter of that residence, later that day.

Ireland was charged with Class B trafficking in heroin.

Crandall wouldn’t say whether additional search warrants had been issued, but he said the case was not yet closed and other agencies had seized evidence at the Verona Island property.

“This investigation isn’t over,” Crandall said.

The arsonist poured an accelerant three-quarters of the way around the home in Orrington and then ignited the flammable liquid, Sgt. Ken Grimes of the state fire marshal’s office said Monday.

Grimes said Friday that the fire marshal’s office “found evidence pertaining directly to the arson we’re investigating” during the search of the Verona Island residence. He said that evidence is being processed in the lab.

Fire investigators have not made an arrest for the arson but “have a person of interest,” Grimes said. The sheriff’s department is still investigating who is responsible for the gunshots.

He wouldn’t say what items were gathered as evidence Thursday, but said it should help support a case against the person of interest, who is not De Los Santos.

After the fire was started, the arsonist or someone else took out a gun and fired at the residence, which had people inside, Penobscot County Sheriff Glenn Ross confirmed Monday.

Most of the fire was extinguished with a garden hose by the landlord of the rental property, who lives nearby.

Ireland was booked into the Penobscot County Jail in Bangor about 5 p.m. Sunday and was later released, a jail official said.

Two people recently had been visiting Ireland, who has lived at the Johnson Mill Road home for about a year, a neighbor said.

Ireland, who has convictions for criminal threatening, disorderly conduct and assault, according to court listings printed in the Bangor Daily News, faces up to 10 years in prison and a fine of up to $10,000 if convicted of felony drug trafficking.

BDN reporter Nok-Noi Ricker contributed to this report.