Federal agents are investigating after a US Border Patrol agent was shot and killed Monday afternoon on the highway in Vermont.

A spokesperson with U.S. Customs and Border Protection has confirmed to NBC5 that a Border Patrol agent and another person were killed Monday afternoon in an incident in Vermont. The FBI said a third person was injured and is now in custody.

A U.S. Border Patrol agent was shot and killed in Vermont on Monday while performing their duties near the Canada-U.S. border, according to U.S. federal and state authorities.