Tristen Kyle Mahorney was 23 when he was shot in Frederick, Maryland on the evening of August 16, 2024. Police responding to reports of a shooting on the 1000 block of Heather Ridge Drive found Mahorney with multiple gunshot wounds; he was taken to a local hospital and died the next day, August 17, 2024. An autopsy later listed a stab wound as the cause of death.

Officers stopped a white Acura leaving the scene and took the driver, 22-year-old Elijah Stephen Mboss of Frederick, into custody after finding him covered in blood and discovering a semi-automatic handgun and a knife in the vehicle. Mboss was charged with first- and second-degree murder, held without bond, and indicted by a Frederick County grand jury on September 13, 2024.

Anyone with information about Mahorney, the events on Heather Ridge Drive that night, or who saw the vehicle leaving the area is asked to come forward.