The family of a U.S. Border Patrol agent who was killed in Vermont during a traffic stop near the Canadian border says he was a military veteran who worked security duty at the Pentagon during the time of the Sept.

David C. Maland was conducting the traffic stop​ on Interstate 91, about 20 miles from the Canadian border when "an exchange of gunfire occurred," FBI said.

Federal authorities investigating the shooting death of a Border Patrol agent on Monday say a German national in the U.S. on a “current visa” was also killed in the exchange of gunfire.