Clemson athletic director Terry Don Phillips said Friday that the NCAA had been on the Tigers' campus this week to talk with two members of the football team.
Phillips issued a statement Friday about the visit, but did not say what the inquiry was about. Phillips also did not identify the athletes, but said Clemson is cooperating fully.
"We do not have reason for concern," Phillips said.
The NCAA is investigating Alabama, North Carolina, Georgia and South Carolina in connection with possible rules violations at a party in Miami.
A person familiar with the situation tells The Associated Press that the Clemson inquiry is not linked to the investigations looking into improper contact with agents at the other schools. The person spoke on the condition of anonymity because the subject of the inquiry is confidential.