Grimm walked away from reporter. After the reporter said on camera that Grimm refused to talk about the charges, Grimm can be seen walking back into view, moving physically close to the reporter.
Most of the scene takes place off camera, and the dialogue is mostly inaudible.
According to NY1 political director Bob Hardt, Grimm told the reporter, "I will break you in half."
@mikiebarb @eorden @repmichaelgrimm @mikescotto He threatened to throw him over the balcony and then said "I will break you in half" more tk
— Bob Hardt (@Bobmagic01) January 29, 2014
Watch the video courtesy of YouTube user Jacob Kornbluh: