Wyoming’s Republican Gov. Mark Gordon voiced concerns about the Justice Department election monitors who observed the primary election in his state last week, saying he’s asked his attorney general to look into their “aggressive” behavior.

The Justice Department sent two Civil Rights Division attorneys to Laramie County, Wyoming, which includes the state capital of Cheyenne. But some officials, including the state attorney general, weren’t made aware of the move in advance, Gordon said at a state canvassing board meeting Wednesday.

“It sounded like the behavior of the observers was a bit aggressive,” Gordon said, adding, “It just was irregular and, and I have asked the attorney general to start looking into … the nature of the visits and all that sort of stuff.”

The DOJ, when reached for comment, pointed CNN to an August 18 statement from Wyoming US Attorney Darin Smith: “Voters deserve absolute confidence that their ballots are secure and their voices are heard without interference…. We are working alongside local officials to ensure every lawful vote is protected.”

CNN has reached out to the governor’s office for comment.