"I'm not speaking about anything's that off-topic, this is only about the president," Grimm told Scotto before walking away.
Then, while the camera was still recording, Grimm returned to say:
"Let me be clear to you, you ever do that to me again I'll throw you off this f——-g balcony."
Scotto asked: "Why? Why? This is a valid question."
To which Grimm said: "No, no, you're not man enough, you're not man enough. I'll break you in half. Like a boy."
Later, Grimm issued a statement that says, in part, "I was extremely annoyed because I was doing NY1 a favor by rushing to do their interview first in lieu of several other requests." He also accused the reporter of "taking a disrespectful and cheap shot at the end of the interview."
NY1's political director, Bob Hardt, says in a statement that the news outlet is "certainly alarmed and disappointed by the behavior of Representative Grimm and demands a full apology from him. This behavior is unacceptable."
Scotto tells CNN that "I'm a New York City reporter. I'm used to push back, but I never encountered anything like that." He also says "I'm not taking it personal."
NY1 adds that:
"The FBI earlier this month charged 47-year-old Diana Durand with using straw donors to exceed the maximum allowable contribution to Grimm's campaign committee. After contributing $4,800, the maximum amount allowed under federal law, Durand allegedly offered to reimburse four friends if they contributed to the campaign.
"Grimm is not charged with any wrongdoing in connection with the probe."