Indiana University police say none of its officers used chemical spray on a rowdy crowd at a concert by rapper DMX.
The crowd reportedly became upset when the charity concert at Lambda Chi Alpha fraternity started late and ended after only a few songs Wednesday night.
Mike Patterson, a contractor who worked security at the show, says students rushed the stage at one point. And IU police Captain Jerry Minger says one person was arrested for disorderly conduct.
Minger says at some point someone sprayed a chemical agent into the crowd. But he says it wasn't any of the IU police, who always document that type of force.