Last Updated Jun 6, 2015 8:18 AM EDT
The sex-abuse scandal involving former House Speaker Dennis Hastert continues to grow.
Federal prosecutors say the investigation into Hastert is widening. They have already accused the former speaker of agreeing to pay $3.5 million to the individual he victimized more than 30 years ago and lying about those payments to the FBI.
CBS News has learned the FBI has interviewed more people in connection with the alleged sexual misconduct by the longest-serving Republican speaker in U.S. history, including a woman who has broken a three-decade-long silence.
Jolene Burdge told ABC News Hastert molested her brother, Stephen Reinboldt, when Reinboldt was in high school in Yorkville, Illinois.
"He damaged Steve, I think, more than any of us will ever know," Burdge told ABC.
Reinboldt graduated in 1971. Hastert was the wrestling coach then, and Reinboldt was the student equipment manager.
Her brother came out to her as gay eight years later.
"I asked him, 'Stevie, when was your first same-sex experience?' And he just looked at me and said, 'It was with Dennis Hastert,' and I just- I know I was stunned," Burdge said. "I mean, here was the mentor, the man who was, you know, basically his friend, who was the one that was abusing him."
While a student, Reinboldt went to the Bahamas with a local Explorer troop.
Hastert went along, and so did Gary Matlock, who was a star Yorkville wrestler from 1969 to 1973. He told CBS News' Dean Reynolds he recalls nothing inappropriate.
"His morals, values, ethics and professional approach and personal influence drew the most out of the youth that he was in charge of at that time," Matlock said.
The federal indictment against Hastert alleges he was paying millions of dollars to an "Individual A" to cover up prior misconduct from his teaching days.
Reinboldt died in 1995 at the age of 42 of AIDS and is not the person who received that money. CBS News has learned the FBI has become aware of as many as three potential victims alleging sexual misconduct.
CBS News has tried repeatedly to reach Hastert but without success.
Hastert's arraignment on the bank charges and lying to the FBI is scheduled for Tuesday. Hastert has not been charged with sexual abuse.