Police think someone damaged the rock and its Plexiglas covering June 2 or 3.
Police Chief Johnson Link said some fingerprints were recovered from the pedestal, which was not damaged. But a review of video from the cameras did not provide anything to help with the investigation, Link said.
Clemson coach Dabo Swinney says it's disappointing that someone would disrespect the school's tradition. Swinney says the school will do what is necessary to protect it in the future.
The rock is called "Howard's Rock" because former football coach Frank Howard began the tradition of the pregame ritual.