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

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

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.

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,

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.

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.

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.

Police are investigating after a man stole a fire department vehicle and several tools from a firehouse in Windsor, Conn., started a small fire in the garage, then used the stolen fire vehicle to try and stop several drivers on Interstate 91 in Massachusetts,

Agent David Maland, 44, was killed Monday afternoon following a traffic stop, a U.S. Customs and Border Protection spokesperson said in a statement. A German national in the country on what the FBI called a current visa was killed and an injured suspect was taken into custody and is being treated at a local hospital.

Governor Phil Scott identified David Maland as the fallen officer, extending his “heartfelt condolences to Agent Maland’s family, friends, and colleagues."