Jeremy Iverson was already in tears before the bailiff handcuffed his older brother Jeffrey, who had just pleaded guilty to sexually abusing two children.
Crying uncontrollably after the hearing Thursday, Jeremy Iverson approached one of the mothers outside the courtroom.
"I'm so, so sorry," he said. "I hope you are OK. There was no way to know."
His brother had also admitted in court that he had assaulted two other children, in what prosecutors called a classic case of "grooming."
Jeffrey Iverson Jr., 31, gained his victims' trust and exploited weaknesses in their relationships with their parents, prosecutors said, noting that he had dated or had a friendship with all the boys' mothers.
One of Iverson's victims came forward in March, setting off a chain of events that eventually led to Iverson being charged with assaulting four boys between the ages of 10 and 13. That victim said Iverson sometimes abused him while taking him for helicopter rides, according to court documents.
The mother of one of the other boys said he wouldn't have come forward if someone else hadn't spoken up.
"My son said he would have taken what happened to him to his grave," said the mother, who asked not to be identified. "Even after the abuse ended, they still hung out together."