Authorities say a U.S. Border Patrol agent was fatally shot Monday afternoon while conducting a traffic stop on Interstate 91.

The federal officer killed while on duty near the Canadian border has been identified as a U.S. Air Force veteran who provided security at the Pentagon during the Sept. 11 attacks.

A section of Interstate 91 in Vermont was closed Monday after Vermont State Police said a U.S. border patrol agent was shot.

An investigation was underway on Tuesday near the United States’ border with Canada, where an agent was fatally shot “in the line of duty,” authorities said

A Customs and Border Protection source has identified the Border Patrol agent shot and killed during a traffic stop Monday as David Maland, 44.

Agent David “Chris” Maland died in a shooting following a traffic stop, the FBI said. A second person killed in the incident was a German national in the country on a current visa, authorities said.

The Vermont Border Patrol agent murdered when he stopped a migrant near the northern border has been identified as David C. Maland, The Post has learned. An agency veteran of nearly a decade,

A U.S. Border Patrol agent was fatally shot during a traffic stop near the Canadian border on Monday, according to officials.

A Connecticut man was arrested after he used a stolen fire department pickup truck to pull over drivers on Interstate 91 in Western Massachusetts early Saturday, according to the Massachusetts State Police.

David "Chris" Maland, the U.S. Border Patrol agent allegedly killed by a German national during a traffic stop near the Vermont-Canada border on Monday, was an Air Force veteran.

Minor injuries were reported after a crash on Interstate 91 North in Windsor early Thursday morning, state police said. The two right lanes are closed on I-91 North between Exits 35 and 36. State police said the crash involved two cars and included a rollover.

Connecticut man stole a fire truck and impersonated police on I-91, later arrested by Massachusetts State Police.