A man shot three co-workers during an altercation Wednesday at a northern Virginia business, killing two of them, before he took his own life during a police standoff along an interstate highway, police said.
Marvin Grant, 37, of Charlotte, North Carolina, opened fire at an equipment rental business in Manassas, about 30 miles (50 kilometers) southwest of Washington, D.C., Manassas Police Chief Doug Keen said at a news conference.
