A local resident told Vienna police that as he was driving northbound on Nutley Street, S.W., and approaching Courthouse Road, S.W., on July 3 at 6:35 p.m. he observed another vehicle approaching from behind at high speed.
After both vehicles stopped for the red traffic light, the complainant yelled at the other driver to slow down, and the other motorist allegedly brandished a firearm.
The other driver then reportedly placed the firearm in his lap and verbally threatened the complainant before making a left turn and continued westbound on Courthouse Road.
Officers searched the area, but did not locate the driver, police said.