WARREN — A man who had drugs and a gun found on him during a 2020 traffic stop in Liberty pleaded guilty on Wednesday to two felony charges.

Matthew J. Thoennes, 34, of Bouquet Street in Youngstown, pleaded guilty to charges of having a weapon as a felon and aggravated possession of drugs. Trumbull County Common Pleas Judge W. Wyatt McKay will sentence Thoennes after he undergoes a background investigation conducted by the Adult Probation Department. He could face as much as four years in prison. Three other charges were dropped as part of Thoennes’ plea deal with prosecutors.

Thoennes remains free after posting a $10,000 bond, court records show.

The charges deal with a May 20, 2020, traffic stop where Liberty police pulled over Thoennes’ car because of a loud muffler. Upon a search of the vehicle, police found a bottle with 17 pills that later tested positive for hydrocodone. Officers also found a loaded 9mm Taurus handgun. As part of the plea deal, Thoennes has to forfeit the weapon and ammunition.

Prosecutors said the gun charge came from Thoennes being convicted of drug charges in a 2003 case out of Minnesota.

In other drug-related cases handled Wednesday in Common Pleas Court:

• Francisco A. Luciano, 23, of Riblett Street, Youngstown, pleaded guilty to a charge of possession of LSD, a fourth-degree felony. Luciano will be sentenced after undergoing a background report conducted by adult probation officers. Luciano’s charge stemmed from a Dec. 11, 2020, traffic stop in Liberty where officers discovered 18 squares of LSD. Luciano’s bond was continued, and he remains free.

• Angel D Stringer, 49, of South Feederle Drive SE in Warren, was given a 15-day term in the Trumbull County jail after she failed a drug test given during her probation violation hearing. Stringer had been convicted of a theft charge in Central District Court and failed two previous drug tests that violated her probation given to her by McKay for an October 2019 conviction on attempted tampering with evidence and possession of cocaine charges.