LOUISVILLE, Ky. (WDRB) -- Central High School was briefly placed on heightened alert Friday after reports of gunfire that turned out to be fireworks, according to Metrosafe dispatchers. 

We're told it was all because of a prank.

It happened around 9:15 a.m. That's when police responded to reports of an active shooter at the school. When officers arrived, they discovered that there had been no shooting, and that someone had set off fireworks inside the school, according to Metrosafe dispatchers.

"I thought somebody was shooting because me and my friend were walking to our next class, and then we seen a whole bunch of people just running towards us," said student Haley Payton. "At first we just kept walking, and then that's when we saw more and more people running towards us -- and then me and my friend just started running too."

School officials say someone from inside reported an active shooter situation. The school quickly went on lockdown, but when police arrived, they learned they were actually dealing with firecrackers. We're told students set off the firecrackers on the first and second floor hallways.

"They look like, just from the paper, firecrackers that go off on the Fourth of July," said Assistant Principal Brenda Schmidt.

There were a series of pops that left many students frightened.

"I was really, really, really, scared," Payton said. "I was sweating, my heart was beating fast."

"We seen a whole bunch of police running in with guns and stuff," Payton added.

"This is serious," said Schmidt. "I mean, we've got LMPD taking their time to check into firecrackers. This is not appropriate for school."

School officials say they are reviewing security cameras and talking to students to find out who is responsible for the prank.

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