Maryland prosecutors have ruled out criminal charges against Montgomery County police officers involved in the shooting death of a man during a weapons raid in March.

The suspect, 21-year-old Duncan Socrates Lemp was reportedly a supporter of the "Boogaloo" movement, which is linked to white supremacy and violence against police and promotes racial warfare.

Howard County State’s Attorney Rich Gibson Jr. concluded that police in neighboring Montgomery County were justified in using deadly force against Lemp. Members of a tactical unit were serving a “no-knock” search warrant at the Lemp family’s home about 4:30 a.m. on March 12 when an officer fatally shot him, WUSA reports.

Detectives obtained the no-knock warrant to search the home Lemp shared with his parents and younger brother after receiving an anonymous tip that Lemp was illegally possessing firearms, police said. Lemp had a criminal record as a juvenile that made it illegal for him to legally possess or buy firearms in Maryland until he turned 30, according to police.

Police detectives recovered three rifles and two handguns from the home.

Howard County prosecutors reviewed Lemp’s death because they have an agreement with Montgomery County to review police shootings.