Donald Trump threatened legal action against a top donor to Right to Rise, a super PAC supporting Jeb Bush's presidential campaign.

Mike Fernandez, the donor, purchased a full-page ad in the Miami Herald on Sunday that labeled Trump a "narcissistic BULLYionaire." Upon learning of the advertisement, Trump's counsel Alan Garten threatened legal action in a letter to Fernandez.

"It has come to my attention that you plan on producing and disseminating certain radio, television, and newspaper advertisements directly and personally attacking my client," Garten wrote. "Though we believe your decision is fool hearted, please be advised that in the event your ads contain any false, misleading, defamatory, inaccurate or otherwise tortious statements or representations concerning Mr. Trump, his businesses or his brand, we will not hesitate to seek immediate legal action to prevent such distribution and hold you jointly and severally liable to the fullest extent of the law."

The letter also added that it would "look forward to doing it."

Read more on WashingtonExaminer.com