The LSU Police Department declined to comment on the investigation, but Cpt. William Conger, an assistant professor of military science, says a suspect has been identified.
Conger found the burned flag, along with two matches and what appeared to be a model rocket engine, at the war memorial at roughly 5:45 a.m.
An LSU flag also was taken, he said.
David Jones II, an LSU student, organized a rally Tuesday to condemn the act. He said students were eager to dispel stereotypes of the suspect or motive for the act.