McArthur Jordan Jr., 51, of 338 Washington Ave., was arrested about 8:15 a.m. Wednesday, according to a press release from Oil City police.
Jordan was charged with possession with intent to deliver heroin and possession with intent to deliver cocaine as well as possession of a controlled substance and drug paraphernalia.
Police also seized an undisclosed amount of U.S. currency in the course of the investigation.
Jordan was arraigned before district judge Andrew Fish and bail was denied. He was taken to the Venango County jail with a preliminary hearing scheduled April 27.
Oil City police were assisted by the Pennsylvania Office of Attorney General Bureau of Narcotics and the Pennsylvania state police.
The second arrest occurred between 1:46 and 11 a.m. Tuesday as police were called to a house at the 300 block of Wilson Ave. for a domestic dispute.
The suspect was gone when police arrived, they said. Police obtained permission to search the house and they found a large amount of marijuana and paraphernalia located in a part of the house occupied by Gregory Rex, 49.
Police listed Rex’s address as 724 Main St., Polk.
A backpack owned by Rex had a gun inside, police said. A felony warrant was obtained for his arrest.
Rex was arrested at the Polk address by Franklin state police and transported to Oil City.
Rex was charged with manufacture of a controlled substance, possession of a controlled substance, possession of drug paraphernalia, possession of a prohibited firearm and carrying a firearm without a license.
He was arraigned before Fish and remanded to the Venango County jail on $50,000 straight bail.