CHICAGO -- The legal woes of once-powerful former House Speaker Dennis Hastert have gone from bad to worse.

A judge on Wednesday warned that false statements Hastert made to investigators last year will factor into his sentencing decision for a case that began as a white-collar crime probe and later unveiled claims of sexual abuse from decades ago .

"That's not conduct that's 40 years old, that conduct is ... a year old," U.S. District Judge Thomas Durkin said, noting that he considered the particular conduct a "big" aggravating factor.

In a damning 26-page filing from last Friday, prosecutors detailed how Hastert's lies inadvertently led investigators to five separate claims of sexual abuse or misconduct from individuals who where on the high school wrestling team Hastert coached more than 40 years ago.

Among them was Individual A, who claimed Hastert molested him in a motel room during a wrestling trip when he was 14, prosecutors said.

Hastert had initially told federal investigators he withdrew cash in small enough amounts to avoid bank reporting rules (an illegal practice known as structuring) because he was being extorted by Individual A.

But after arranging to record Hastert demanding that Individual A end the extortion, investigators realized Hastert's claim of victimization didn't add up. Investigators found Individual A's response and tone to be "inconsistent" with that of an extortionist and noted he was even calm and understanding when Hastert said he couldn't get more money. In subsequent interviews, investigators learned from Individual A about the history of his relationship with Hastert.

Prosecutors said Individual A asked Hastert for $3.5 million in compensation for the alleged abuse and Hastert agreed, but refused suggestions they formalize the agreement with lawyers.