Clemson University police have arrested two more North Carolina men in the vandalism to Howard's Rock inside the football stadium.
Police arrested 46-year-old Michael J. Rogers of Pisgah Forest, N.C., and 17-year-old Alden James Gainey of Brevard, N.C., Friday and charged them with felony counts of conspiracy and obstructing justice.
The two appeared before a Pickens County (S.C.) Magistrate and were each released on $7,500 personal recognizance bonds.
Rogers' son, 18-year-old Micah Rogers, had previously been arrested in the incident. He was charged in June with malicious injury to animals or personal property valued at more than $2,000, but less than $10,000; trespassing and unlawful entry into enclosed places.
Police say the rock, which players rub before running onto the field, was chipped June 2 and its protective casing destroyed.