The suspect in the stabbing of convicted pedophile and former gymnastics coach Larry Nassar told authorities that the ex-doctor provoked the attack by making vile comments about Wimbledon.
Shane McMillan was convicted of assaulting a correctional officer at a Louisiana federal penitentiary in 2006, and attempting to stab an inmate at a Florence, Colorado, in 2011.
He's no stranger to assaulting others in prison. But this time was different.
The 49-year-old told prison workers that Nassar had made a comment about wanting to see young girls playing in the women's match, an insider who wished to remain anonymous said.
The comment allegedly disgusted McMillan. So, later that Sunday, he shanked the convicted paedophile in his cell.
Nassar sustained wounds to his neck, chest and back and reportedly suffered from a collapsed lung.
The attack happened in Nassar's cell at United States Penitentiary Coleman in Florida, which meant that cameras didn't capture it.
Four other inmates rushed in and pulled McMillan off of the sexually abusive ex-Olympic team doctor, who was subsequently rushed to a hospital. Correctional officers had to perform life-saving measures, the insider said.
As of Wednesday, Nassar was in stable condition recovering from his injuries.
McMillan stabbed his fellow convict with a shiv, a makeshift weapon he fashioned out of various materials on hand at the prison.
He was able to get to Nassar easily, as most federal prisons keep cell doors open during the day to let the prisoners move around freely and mingle.
Nassar was convicted on multiple counts of sexual abuse over two decades after more than 300 athletes came forward to make complaints against the former gymnastics doctor.
USA Gymnastics fired Nassar in 2015 "after learning of athlete concerns." It was later revealed, however, through an IndyStar investigation that the athletic body had covered up several claims of sexual abuse, both from Nassar and by coaches.
The chain of events leading up to his conviction was sparked by reports from Olympic athletes Nassar had treated, including renowned gymnast Simone Biles.
In 2018, he was found guilty of 125 counts of sexual assault between 1998 and 2015. Three cases were added to the ruling a month later.
He was sentenced to more than 300 years in jail.
"I just signed your death warrant," Judge Rosemarie Aquilina iconically said during the sentencing hearing.
She later went on to chastise him after he complained of discomfort being in the courtroom and listening to testimony from his victims.
"Spending four or five days listening to them is significantly minor considering the hours of pleasure you had at their expense and ruining their lives," she quipped.
It's yet unclear whether or not Nassar will make a full recovery after the stabbing on Sunday. But one thing is clear — if he does survive the ordeal, he's going straight back to prison.