One person is reportedly dead and another injured following a Wednesday night shooting on the campus of Middle Tennessee State University during a high school graduation ceremony.

MTSU said a shooting had been reported at Murphy Center where Riverdale High School was holding its graduation ceremony. The estimated 450 graduates had received their diplomas and the ceremony had ended when the shooting erupted.

The shooter or shooters remained at large Thursday morning with officers using K-9 units to canvas the area. The injured person has been described by law enforcement as being in critical but stable condition.

Rutherford County Sheriff's Department Sgt. Dan Goodwin told News Channel 5 in Nashville, "We are asking for the public's patience. We are at ground zero on this investigation."

Goodwin said police found two people suffering from gunshots near the tennis courts. It has not been revealed if the victims are students.

There will not be school at Riverdale on Thursday.

"The school is going to be closed tomorrow. We can't comment on anything about suspects or victims. School is closed as a precaution," Rutherford County Schools spokesperson James Evans told News Channel 5.

Anyone with information can report it to MTSU Police at (615) 898-2424.

Rutherford County School Board member Claire Maxwell read a statement Thursday morning: “My heart is breaking for the victims of last night’s tragic ending to Riverdale graduation. What should have been the greatest night of their young lives instead turned into everyone’s worst nightmare. My thoughts and prayers go out to the young life lost and his family and my prayers are also extended to the other young man critically injured," she said.