Fairfax Co. police: Teen stabbed mother’s boyfriend to stop assault

Police in Fairfax County, Virginia, say a teen fatally stabbed his mother’s boyfriend Sunday night to stop him from assaulting her — and detectives are now investigating whether it was a “justifiable homicide.”

Officers were called to an apartment on Janna Lee Avenue near Huntley Meadows Park in Mount Vernon just before 10 p.m. Sunday for the report of a stabbing.  They found 32-year-old Marcus Roberson, of D.C., suffering stab wounds to the upper body. He was taken to the hospital, where he was pronounced dead.

In a news release Monday, police said they have determined Roberson was visiting the home “when a verbal argument escalated into an assault.” The teen told officers he stabbed Roberson to stop him from assaulting his mother, according to police.

The teen has not been identified, and police have not provided his exact age.

Police said there were three other children inside the apartment at the time who were unharmed. The teen’s mother was treated at the scene for injuries that were not considered life-threatening.

Detectives interviewed the teen Sunday night and then released him back to his mother. He has not been charged.

Detectives are continuing to conduct interviews and to collect evidence to determine the circumstances that led up to the stabbing.

“Detectives are investigating the possibility this is a justifiable homicide,” police said in the news release.

Police will consult with the Office of the Fairfax County Commonwealth’s Attorney to determine if charges will be filed.

Jack Moore

Jack Moore joined WTOP.com as a digital writer/editor in July 2016. Previous to his current role, he covered federal government management and technology as the news editor at Nextgov.com, part of Government Executive Media Group.

Tadiwos Abedje

Tadi Abedje is a freelance digital writer/editor for WTOP. He was born in Washington, D.C., and grew up in Northern Virginia. Journalism has been his No. 1 passion since he was a kid and he is blessed to be around people, telling their stories and sharing them with the world.

Like WTOP on Facebook and follow WTOP on Twitter and Instagram to engage in conversation about this article and others.

Get breaking news and daily headlines delivered to your email inbox by signing up here.

© 2023 WTOP. All Rights Reserved. This website is not intended for users located within the European Economic Area.

More from WTOP

Log in to your WTOP account for notifications and alerts customized for you.

Sign up