The venue, Scoot Inn, had reached its capacity of 999 people, but crowds of fans had been lined up outside, wanting to get in.
Tyler, the Creator -- whose real name is Tyler Gregory Okonma -- yelled out at the fans during his performance.
“All y’all outside the gates, y’all push through," he said.
The crowd pushed through the gates and security guards, and one guard alleged he was punched in the face by a member of the crowd.
Parts of the incident were caught on video.
[KXAN-TV, Austin, Texas]