A teenage juvenile fatally stabbed his mother’s boyfriend to stop him from assaulting her, according to Fairfax County police reports.
At 9:58 p.m. Monday, Jan. 30, officers responded to a stabbing in an apartment in the 7900 block of Janna Lee Avenue in Mount Vernon. The juvenile teenager called police to report he stabbed his mother’s boyfriend to stop him from assaulting her. When officers arrived, they found Marcus Roberson, 32, of Washington DC, suffering stab wounds to the upper body. Roberson was taken to a nearby hospital where he was pronounced deceased.
Preliminarily, detectives from FCPD Major Crime Bureau and Crime Scene Section determined Roberson was visiting the address when a verbal argument escalated into an assault. The juvenile teenager reported he stabbed Roberson to stop the assault. There were three other children inside the apartment that were unharmed. The woman was treated at the scene for injuries not considered life threatening.
Last night, after interviewing the juvenile teenager, he was released to his mother and has not been charged. Detectives continue to conduct interviews and process evidence recovered from the scene to determine the circumstances that led up to the fatal stabbing. Detectives are investigating the possibility this is a justifiable homicide. Detectives will consult with the Office of the Fairfax Commonwealth’s Attorney to determine if charges will be filed at a later date.
The Office of the Chief Medical Examiner will conduct an autopsy in the coming days to determine the cause and manner of death.
Anyone with information regarding these incidents is asked to call the Major Crimes Bureau at 703-246-7800, option 2.