Vermont officials are mourning the loss of a U.S. Border Patrol agent killed in the line of duty near the Canadian border on Monday.

One suspect is dead and another is in custody after a U.S. Border Patrol agent was fatally shot in the line of duty in northern Vermont on Monday afternoon, federal authorities confirmed.

The Vermont State Police are assisting federal authorities after a shooting involving a Border Patrol agent. They said it happened around 3:15 p.m. Monday on Interstate 91. The FBI is leading the investigation.

COVENTRY, Vt. (TNND) — A U.S. Border Patrol agent shot and killed during a traffic stop in northern Vermont Monday was a veteran of the U.S. Air Force who worked security at the Pentagon during the Sept. 11 attacks, according to his family and officials.

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,

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

The FBI is investigating a Border Patrol agent-involved shooting, according to a statement from the Vermont State Police.

A US Border Patrol agent was killed Monday in northern Vermont south of the Canadian border, authorities said.

The agent's death Monday afternoon was confirmed by the FBI and Benjamine Huffman, acting secretary of the Department of Homeland Security in Washington. The injured suspect was taken into custody after the violence on Interstate 91 in Coventry, about 20 miles (32 km) from the Canadian border, the FBI said in a statement.

A United States Border Patrol agent was gunned down during a traffic stop in Vermont near the Canadian border, officials have confirmed. It happened around 3:15 p.m. Monday on Interstate 91 in Coventry, 20 miles from the Northern border, according to the Department of Homeland Security.

The FBI says Border Patrol Agent David "Chris" Maland was fatally shot during a traffic stop on Interstate 91 in the North Country of Vermont.