The father of three daughters who were sexually assaulted by Larry Nassar lunged at the disgraced doctor during his sentencing hearing on Friday.
Randall Margraves asked Judge Janice Cunningham to give him "five minutes in a locked room" with Nassar, before racing across the courtroom floor and lunging at the doctor.
He was blocked by the former USA Gymnastics team doctor's attorney, Matthew Newburg, and tackled by at least four deputies.
Held down on the floor courtroom floor as he was handcuffed by deputies, the father said, "Give me one minute with that bastard."
He repeated "one minute" as deputies asked him to "relax."
The intense moment came after Margraves had asked the judge if he could have a "chance to say something" following testimony by one of his daughters.
After the judge agreed to let her father speak, Margraves directed his gaze at Nassar and said, "You son of a bitch," before being cut off by Cunningham.
"No, we don't want to swear. We don't want to have profanity," she said.
"I can't imagine the anger and the anxiety and the feeling of wanting retribution, and if you need to say something to help you, I'm more than willing to let you say something. But in a courtroom, we try, we don't use profanity. But you have some words to say, I would like to give you the opportunity to say them," Cunningham added.
"I would ask you to, as part of the sentencing, to grant me five minutes in a locked room with this demon. Would you do that? Yes or no?" the father asked. Nervous laughter could be heard in the courtroom in response to the question.
After being told by the judge that she couldn't do that, the father set off across the floor.
In video footage of the incident, at least one person can be heard sobbing as deputies asked Nassar to stand up.
Last month, Nassar was sentenced to up to 175 years in prison by Ingham County Circuit Court Judge Rosemarie Aquilina, who told the doctor, "I just signed your death warrant."
The former USA Gymnastics doctor had pleaded guilty to first-degree criminal sexual misconduct for sexually assaulting the girls he was meant to treat. He had already been sentenced to 60 years for child pornography possession.