The University of Oklahoma in the United States said its campus is secure, hours after the school warned that an active shooter was present. The emergency was lifted by the University after authorities conducted a sweep of the campus and declared that no threat had been discovered.

The University of Oklahoma tweeted, “OU-NORMAN Critical 10:53 pm: OUPD has issued an ALL CLEAR. After a thorough search, no threat was found. There is no threat to campus. Alert has been canceled”, through its official Twitter handle.

Earlier in the day, students were warned to avoid the South Oval area and to take cover as authorities searched the college campus for a shooter.

Earlier today, the college tweeted, “OU-Norman Emergency: There is an active shooter at the Van Vleet Oval. Take immediate action now. Run. Hide. Fight!”

Multiple police and SWAT tactical vehicles were visible on local media outside the University of Oklahoma.

The university’s president, Joseph Harroz, praised the law enforcement agencies quick response.

Harroz said, “Our officers acted quickly, our emergency protocols were followed, and our community was kept informed. The campus is secure”.

The incident comes just days after two nine-year-old girls, a nine-year-old boy, two teachers, and a school custodian were killed in a Nashville school shooting.

School and college shootings are all too common in the United States, where the availability of firearms has increased dramatically in recent years. According to the Gun Violence Archive, there have been 129 mass shootings this year, defined as incidents in which four or more people were shot or killed.

Efforts to prohibit the powerful weapons have met with opposition from Republicans, staunch supporters of the constitutional right to keep and bear arms.

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