CLEMSON, S.C. — Clemson's athletic department reported one positive drug test for cocaine, and four for marijuana during the year ending June 30.

The department announced its drug testing results today. The schools says it conducted 654 tests on athletes for recreational drugs from July 1, 2007 through this past June. Clemson also conducted 70 tests for steroid use. Officials said none returned positive.

The names of those who tested positive were not released.

Clemson reported six secondary violations of NCAA rules for the spring semester.

All infractions were considered Level II violations, meaning they were reported to the Atlantic Coast Conference, which sent them on to the NCAA.

The names of the coaches, athletes or sports involved in the violations or drug tests were not made public. Clemson releases its NCAA secondary violations following each semester and drug testing information each year.

No athlete, sport or coach was identified in Clemson's list of secondary infractions.