CLEVELAND - A prominent Donald Trump delegate from New Hampshire says Hillary Clinton should be "put in the firing line and shot for treason," over the Benghazi, Libya, attacks that killed four Americans.

The Secret Service is now investigating his remarks.

New Hampshire state Rep. Al Baldasaro appears frequently with Trump and serves as an adviser on veteran's issues. He made the remarks Tuesday when asked on a Boston radio program if Clinton was responsible for the Benghazi deaths.

He says Clinton "is a disgrace for the lies she told those mothers about their children," adding, "Hillary Clinton should be put in the firing line and shot for treason."

He's also calling Clinton a "piece of garbage" for using a private email server while she was President Barack Obama's secretary of state.

Secret Service spokesman Robert Hoback says the agency is aware of comments. Hoback says the Secret Service "will conduct the appropriate investigation."

Baldasaro is known for making controversial comments in his role as a New Hampshire lawmaker. He did not immediately respond to a request for comment Wednesday.

Trump campaign spokeswoman Hope Hicks tells NH1 News that Baldasaro doesn't speak for the campaign.