TMZ--the usually celebrity-tilted website--is reporting that according to its sources, the FBI is now expanding its probe to cover an Auburn booster recently arrested in a bribery sting.

Dog track owner Milton McGregor was arrested recently for allegedly bribing Alabama state politicians to vote for gambling.

TMZ did report that it is not clear what the relationship is between McGregor and Newton. TMZ did however report that two years ago, McGregor donated $1 million to the athletics department for arena construction.