A Virginia man accused of sending harassing emails and messages to Tulsa Mayor G.T. Bynum pleaded guilty to cyberstalking charges on Wednesday.

Prosecutors say in June, Adam Maxwell Donn sent more than 40 emails and more than a dozen threatening phone messages to Mayor Bynum's house, trying to convince the Mayor to cancel President Trump's campaign rally at the BOK Center.

“Cyberstalking can be a terrifying ordeal for victims. Adam Donn’s incessant harassment and threats to both the Mayor and his family more than crossed the line. They weren’t protected speech; they were criminal acts,” said U.S. Attorney Trent Shores. “Today, Mr. Donn admitted his guilt and will now face the possibility of federal prison time when sentenced. The Tulsa Police and FBI really did some top-notch investigative work on this case. They identified the cyberstalker, protected the victims from harm, and ultimately arrested Mr. Donn in Virginia.”

Donn is set to be sentenced in January.