article_snippet: Police were called after a station worker reported an 'unauthorized person' on the tracks.
article_snippet: Nobody else was hurt in the incident.
article_snippet: This morning crime-scene technicians were seen carrying crime-scene technicians equipment into Potomac Avenue station in Washington. 
article_snippet: Potomac Avenue station in Washington was closed for the night following the shooting but has now reopened.
highlights_snippet: Called after station worker reported an 'unauthorized person' on tracks .
  