A New Hampshire man has been charged with threatening to kill a U.S. senator because he was angry that the senator was “blocking military promotions,” federal prosecutors announced Friday.

Brian Landry, 66, of Franklin, is accused of calling and leaving a threatening voicemail at a district field office of a senator on May 17, according to court documents. Prosecutors did not name the senator in their complaint.

“Hey stupid, I’m a veteran sniper,” Mr. Landy said in the voice mail. “Unless you change your ways, I got my scope pointed in your direction and I’m coming to get you. You’re a dead man walking,” finishing with some expletives.

Landry later told investigators that he had called the senator’s office because he had heard on the news that the senator was “blocking military promotions,” according to court documents.

Landry admitted to federal investigators that he had called the senator’s office but did not recall exactly what he said, the U.S. attorney’s office said. It was not immediately known if he is being represented by an attorney.

If convicted, Landry faces a sentence of up to 10 years in prison and a fine of up to $250,000.