OU President Joe Harroz said in a statement late Sunday that while wearing blackface is racist, free speech protections likely prohibit him from removing the student from campus.
The university newspaper OU Daily reported that the student said he was wearing a charcoal face mask and had no racist intent.
A group of black student leaders notified OU administrators about the post Sunday.
Two students withdrew from OU last year after a video surfaced of a woman in blackface, and the university severed ties with a fraternity in 2015 after a racist chant was caught on video.
Copyright 2019 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.