Shooting scare at Univ. of Oklahoma briefly shuts down campus - CNN.com STORY HIGHLIGHTSNEW: Machinery backfire may be behind incident, student paper reportsNo evidence of a shooting has been found, school spokeswoman says Normal campus operations resume except at Gould Hall Earlier, students were told to take shelter (CNN) -- The University of Oklahoma in Norman briefly shut down Wednesday after a report of a possible shooting.
No evidence has been found of any shots being fired, and no injuries have been reported, school spokeswoman Catherine Bishop said.
After telling students to take shelter for more than 30 minutes, the school later announced that normal campus operations had resumed -- except at Gould Hall, the site of the reported shooting, "where additional checking is continuing," the school tweeted.
Gould Hall houses the university's College of Architecture.
Both the Norman and campus police responded quickly as did emergency personnel, the school tweeted, adding that the school's president, David Boren, is at the scene.
Boren told students the incident may have been a false alarm caused by a machinery backfire, independent student newspaper The Oklahoma Daily reported on Twitter.
Maj. Bruce Chan of campus police told CNN there was a report of shots fired in the Gould Hall area of campus.
The incident took place at around 11:20 a.m. local time (12:20 p.m. ET) while classes were in session.
Students and faculty were alerted via text.
On Tuesday, a gunman shot and killed a man at Purdue University in Indiana.