(CNN) — An active shooter is on campus at the University of Oklahoma in the city of Norman, the school said in a tweet Friday night.

“There is an active shooter at the Van Vleet Oval. Take immediate action now. Run. Hide. Fight!” the University of Oklahoma said in a tweet just before 10:30 p.m. ET.

This is a developing story and will be updated.

The-CNN-Wire™ & © 2025 Cable News Network, Inc., a Time Warner Company. All rights reserved.

Join our Newsletter for the latest news right to your inbox