Donald TrumpDonald John TrumpIGĀ investigating Comey memos over classified information: report Overnight Defense: Congress poised for busy week on nominations, defense bill | Trump to deliver Naval Academy commencement speech | Trump administration appeals decision to block suspected combatant's transfer Top Pruitt aid requested backdate to resignation letter: report MORE is giving his top campaign aide "credit for having spirit" after Corey Lewandowski was involved in an incident with a protester at one of the GOP presidential front-runner's rallies.

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On Saturday, Lewandowski, Trump's campaign manager, appeared to grab and pull a protester by his collar at a rally in Tucson, Ariz.

"I give him credit for having spirit. He wanted them to take down those horrible, profanity-laced signs," Trump said on ABC's "This Week" on Sunday. "The police were a little bit lax, and he had signs. They had signs up in that arena that were horrendous."

In a statement, the Trump campaign said it was a man to Lewandowski's left who pulled the protestor back.

Lewandowski reportedly also grabbed the arm of former Breitbart reporter Michelle Fields during a press conference earlier this month and yanked her down.

The campaign also denied that claim, calling it "entirely false."