The Louisiana State University’s campus was temporarily placed on lockdown after a report of a gunman on its grounds. The university responded with a warning, telling its students in a tweet to “run, hide or fight.”

The university first warned about an armed intruder on Tuesday afternoon, and soon followed up its initial tweet with advice to “Run: Exit the area and move away from danger. Hide: If escape is not possible, find a safe area to hide. Fight: This is an absolute last resort.”

Run: Exit the area and move away from danger.Hide: If escape is not possible, find a safe area to hide.Fight: This is an absolute last resort.https://t.co/Ow23ySe5gB — LSU (@LSU) August 20, 2019

A professor working in the graduate school on LSU’s grounds tweeted that he had been “waiting out an active intruder on LSU's campus for about the last 50 minutes,” adding “we are locked down and just waiting.”

We've been waiting out an active intruder on LSU's campus for about the last 50 minutes and their hasn't been an update yet. I work in the graduate school which is basically right next to Coates Hall, we are locked down and just waiting... and waiting.. — Eugene B. Johnson (@eugenejohnson_) August 20, 2019

“One of the cleaning staff saw someone with a pistol,” LSU professor Dr. Edward Gibbons told local outlet the Advocate, saying that he’s not aware if the gunman has been found.

JUST IN: #LSU professor Dr. Edward Gibbons gives a firsthand account on what he experienced inside Coates Hall this afternoon @theadvocatebrpic.twitter.com/Oy5YzVveCV — Hilary Scheinuk (@hscheinukphoto) August 20, 2019

Following two hours of uncertainty, the university tweeted that “LSUPD has investigated the report of an armed subject at Coates Hall and has determined there was no threat.”

Update: LSUPD has investigated the report of an armed subject at Coates Hall and has determined there was no threat. LSU is returning to normal operations. — LSU (@LSU) August 20, 2019

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