NBC Universal, Inc. News4’s Jackie Bensen reports from the scene in Potomac, Maryland.

Police shot and killed a man in Potomac, Maryland, Thursday while serving a warrant at a house, according to the Montgomery County Department of Police.

Officers were serving a “high risk” warrant for firearms-related offenses at a house in the 12200 block of St. James Road about 4:30 a.m. SWAT officers were entering the house when they encountered the suspect, identified as Duncan Socrates Lemp, 21. Lemp was shot fatally by an officer assigned to the Special Operations Division - Tactical Unit.

Lemp's family released a statement Thursday night saying they are grieving and plan to investigate hiss death and hold those responsible accountable.

“The police had obtained a search warrant for the home, however the search warrant makes no mention of any imminent threat to law enforcement or the community. No resident of the home had any criminal record,” the statement said.

The family believes body camera footage and forensic evidence will prove Lemp was unjustly killed.

The officer involved was placed on administrative leave per standard protocol, according to police. Detectives from the Major Crimes division are still investigating the incident.