The Secret Service said Wednesday that it is investigating an adviser to Donald Trump's campaign who said Hillary Clinton should be "put in the firing line" over the Benghazi attack as well as her personal email server.

Secret Service spokesman Robert Hoback confirmed the investigation of Al Baldasero to The Daily Beast Wednesday.

Baldasero, a New Hampshire state legislator and convention delegate who advises the Trump campaign on veterans' issues, told a radio interviewer Tuesday that the presumptive Democratic nominee "is a disgrace for the lies she told those mothers about their children [in Benghazi] ... This whole thing disgusts me, Hillary Clinton should be put in the firing line and shot for treason."

When asked Wednesday about his comments by the Daily Beast, Baldasero said, "Anyone that commits treason should be shot ... I believe Hillary Clinton committed treason. She put people in danger. When people take confidential material off a server, you’re sharing information with the enemy. That’s treason."

New Hampshire GOP Chairwoman Jennifer Horn said in a statement that Baldasaro's comments are "appalling and have no place in public discourse." She added that she condemns his statements "in the strongest terms possible and urge him to immediately apologize."

New Hampshire House Speaker Shawn Jasper, a Republican, said Baldasaro's comments in no way reflect the views of the chamber.

He said that, like Hillary Clinton or not, "the idea that a New Hampshire lawmaker would suggest that a candidate should be executed is just outrageous."

The Associated Press contributed to this report.

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