He became the longest-serving Republican House speaker in U.S. history, but remained so proud of his days as a small-town high school teacher and wrestling coach that he relished the Capitol Hill nickname "Coach."

But this week those once-idolized small-town roots caught up with the 73-year-old Hastert, who in recent years has worked behind the scenes as a Washington power broker.

On Friday, federal law enforcement officials said Hastert had paid $1.7 million over the last four years to conceal sexual abuse against a former male student he knew during his days as a teacher in Yorkville, Ill., where Hastert worked until 1981.

A top federal law enforcement official, who would not be identified speaking about the ongoing federal case, said investigators also spoke with a second man who raised similar allegations that corroborated what the former student said. The second person was not being paid by Hastert, the official said.