A Butler man is facing federal charges of possessing a firearm and drug trafficking originating from an alleged shooting in Butler earlier this year.

Darnell Wynn, 41, faces federal charges on top of county charges filed in February after police arrested him as a suspect in the shooting. A federal grand jury in Pittsburgh charged Wynn with violating federal narcotic and firearm laws, according to a government announcement Tuesday. The indictment cites Feb. 15 as the date of the offense.

Butler City Police arrested Wynn on that day after responding to the area of Mitchell Avenue at State Street after neighbors reported hearing gunshots. Police said they caught Wynn with the equivalent of 10,000 stamp bags of suspected heroin.

In the county case, he faces felony charges of attempted homicide, aggravated assault, possession with intent to deliver a controlled substance and illegal possession of a firearm. He also is charged with other misdemeanor offenses.

Interviews with multiple witnesses pointed police in the direction of Wynn, who was living with a woman at a State Street home.

Police said the 24-year-old victim, who shares a child with Wynn, drove near the home after the two argued on the phone.

“Wynn was calling her from a blocked number and was upset he could not see their child,” Capt. Ben Spangler, the investigating officer, said in his affidavit.

The documents said while this was happening, Wynn walked from an unnamed alley onto Mitchell Avenue and began shooting at the victim, who retreated back inside her car.

Capt. Jim Hollobaugh on Tuesday said police believe Wynn exited the alley and began shooting at the victim, then at the front of the car. He allegedly continued to follow and pull the trigger as the victim drove past him south on Mitchell Avenue.

While investigating the shooting, police obtained multiple search warrants for the State Street home and three vehicles belonging to or used by Wynn and the woman with whom he lived.

According to a police news release, investigators found a .40-caliber Glock semi-automatic pistol and a bag containing 180 grams of suspected heroin and two ounces of suspected cocaine in the trunk of the Hyundai.

The caliber of the pistol matches the caliber of six spent cartridges recovered at the scene, according to charging documents.

The police news release noted that the amount of heroin seized would equal about 10,000 stamp bags, or about 200 bricks.

And the federal charges cite the heroin seized in their case. They accuse Wynn of possessing 100 grams or more of a mixture and substance containing a detectable amount of heroin, 10 grams or more of a mixture and substance containing detectable amounts of fluorofentanyl, fentanyl and tramadol, as well as a quantity of a mixture and substance containing detectable amounts of heroin and fentanyl. The indictment further charged Wynn with possessing a firearm in furtherance of a drug trafficking crime. It also charged Wynn with possession of a firearm and ammunition as a convicted felon.

Court records showed that in 2017, Wynn pleaded guilty to felony drug charges, which sent him to state prison with one year of probation following his release.