A Harbeson man is facing multiple felony charges after Delaware State Police said troopers discovered thousands of bags of heroin, a handgun, and a large-capacity magazine during a traffic stop in Sussex County Sunday night.
According to police, the investigation began on May 31, 2026, at approximately 9:40 p.m., when a trooper observed a Chevrolet Camaro speeding and swerving westbound on John J. Williams Highway near Robinsonville Road.

Troopers identified the driver as 43-year-old Michael Mock of Harbeson. Police said Mock displayed multiple signs of impairment during the stop. After standardized field sobriety tests were administered, he was arrested on suspicion of driving under the influence.
During an inventory search of the vehicle, investigators said troopers recovered approximately 169.83 grams of heroin, which police estimated to be about 5,661 bags, along with a .40 caliber handgun, a large-capacity magazine with ammunition, and drug paraphernalia.
Authorities said a computer check determined Mock had two prior DUI-related convictions.
Mock was taken to Delaware State Police Troop 7, where he was charged with multiple offenses, including possession, purchase, ownership, or control of a deadly weapon by a person prohibited while also possessing a controlled substance, carrying a concealed deadly weapon, possession of a firearm during the commission of a felony, possession of a large-capacity magazine, possession with intent to deliver a Tier 3 quantity controlled substance, possession of a Tier 3 quantity controlled substance, third-offense DUI, two counts of possession of drug paraphernalia, and traffic-related violations.
He was arraigned in Justice of the Peace Court 11 and committed to Sussex Correctional Institution on $69,500 cash bail.

