A longtime assistant coach of Syracuse University’s famed basketball program is under investigation for alleging sexually abusing a ball boy, police said yesterday.

The school is the second college sports powerhouse to be rocked by child-abuse allegations in recent weeks.

Bernie Fine, the Brooklyn-born assistant coach for the past 35 years, allegedly abused at least one boy throughout the 1980s on the SU campus and during road games — including the 1987 Final Four.

“We are in the very early stages of an investigation,” Sgt. Tom Connellan told the Syracuse Post-Standard.

The alleged victim, Bobby Davis, now 39, said the accusations of child rape against Penn State assistant football coach Jerry Sandusky prompted him to go public, ESPN reported.

He claimed he’d been abused from before he was in seventh grade until he was 27.

Davis also said legendary coach Jim Boeheim saw him lying on Fine’s bed in hotel rooms.

“I know this kid, but I never saw him in any rooms or anything,” Boeheim told ESPN. “It is a bunch of a thousand lies that he has told.”

A second man, a relative of Davis, told ESPN he, too, was abused by Fine.

Fine, 65, who was placed on administrative leave yesterday, did not return a call from The Post for comment.

Both ESPN and the Post-Standard reported they investigated the claims by Davis, a former Fine neighbor, in 2003, but couldn’t corroborate them.

That same year, Davis also told the school his story, but was told the statute of limitations had expired, ESPN said.

And the university investigated his claims in 2005.

The school’s “nearly four-month long investigation included a number of interviews with people the complainant said would support his claims. All of those identified by the complainant denied any knowledge of wrongful conduct,” said spokesman Kevin Quinn. “The associate coach also vehemently denied the allegation.”

Meanwhile, in State College, Pa., more details emerged regarding assistant football coach Mike McQueary, who is under fire for reporting Sandusky’s alleged rape of a child to coach Joe Paterno instead of the police.

McQueary attended fundraisers for The Second Mile — the charity Sandusky founded and allegedly used to find victims — a year after he reported witnessing the rape, according to the Centre Daily Times.

Sandusky, 67, who is free on bail, has denied the charges in a TV interview in which he admitted he showered with boys but denied any abuse.

Since that prime-time chat with NBC, however, more alleged victims have come forward.

“They’re literally processing it right in front of us,” victims’ attorney Andy Shubin told the Harrisburg Patriot-News.