1

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

2

At the Van Vleet Oval, there is an active shooter. Immediately take action. Just before 9:30 p.m. CT, the University of Oklahoma urged its followers to "Run. Hide. Fight!" in a tweet.

3

Another tweet from 9:45 p.m. CT said that campus police were looking into "possible shots fired" on the campus. Don't go near South Oval. Take cover," the university advised in the tweet.

4

The warning was followed by another tweet indicating campus police were investigating “possible shots fired” on school grounds.

5

After a thorough search, no threat was found. There is no threat to campus. Alert has been canceled,” the university said on Twitter at 10:53 p.m. CT Friday.

6

Eric Foster, a trooper with the Oklahoma State Highway Patrol, told CNN that the campus is secure and that no injuries have been reported. A "all clear" alert was also issued by university police.

7

Nearly 90 minutes after the university issued a warning that an active shooter was present on Friday, 

8

officials announced that the University of Oklahoma's campus in the city of Norman is safe and that there is no threat to the neighbourhood.