A Deion Sanders mural at Jackson State University was defaced -- but not by the student seen in a viral video circulating online ... TMZ Sports has learned.
A rep for JSU tells us the mural depicting Coach Prime in a Jackson State hoodie and hat was recently messed with, though it's unclear when it exactly happened -- and the culprit remains unknown.
The school rep says the student seen wiping Deion's mural, which initially went up for football season/Homecoming around October, was trying to clean it up ... and received permission from the university to do so.
Sanders spent three seasons with the Tigers, going 27-5. The reaction to his departure to Boulder was polarizing, with some praising him for moving up in the coaching world -- while others criticized him for leaving a program he had helped turn into a powerhouse.