Federal authorities subpoenaed records and testimony from Nike employees in a widening of the corruption case rocking the NCAA, according to a report Wednesday.

Sources said the FBI was scrutinizing Nike’s Elite Youth Basketball program, according to a Twitter post by sports lawyer and Forbes writer Darren Heitner.

On Tuesday, Heitner was first to report that the feds had raided the offices of the ASM sports-management firm, which formerly employed an agent busted on bribery and fraud charges in an alleged college-basketball recruiting scam.

Four NCAA Division I assistant coaches and a top exec at Adidas were also among the 10 people charged Tuesday by Manhattan federal prosecutors.

Acting Manhattan US Attorney Joon Kim has urged anyone else who “engaged in this conduct” to turn themselves in, saying: “I think it’s better for you to call us, than for us to call you when we’re ready to charge you.”

Nike didn’t immediately return a request for comment.