There's something haunting the halls of Deerpark school, and the staff say it isn't a student.

You may remember this security camera video, which went viral last month. A camera positioned in the school's hallway recorded a number of spooky, unexplained events near a bank of lockers. In the video, you can see doors slamming, papers flying out of lockers, and a plastic sign being knocked down by an invisible force.

When the video went viral around the world, the school's deputy principal Aaron Wolfe claimed he "couldn't understand how this had occurred," but said if it was a prank "it's very well done!" Since Wolfe started working at the school last year, he says teachers and other staff have complained about bizarre events.

The halls of Deerpark are said to turn unnaturally chilly, and staff have even reported hearing crying noises in the hallway. The school's creepy history might explain the many ghost stories: Wolfe claims that Deerpark "is built on a site known as Green Gallows. In the 19th century, criminals were hanged here."

Some insisted that the video had to be fake, and claimed it was made using green screens, or computer editing. "I wish our school had these types of resources," Wolfe told Today. But almost a month later, Wolfe has more proof of Deerpark's "ghosts."

In a new video, the security camera catches a backpack launching off the lockers and a chair being dragged across the floor.

When the first video was released, Wolfe said a medium had contacted him to warn that "something will happen to me one night that will make me a believer," maybe this is what they were talking about! But the fact-checking website Snopes has their own theories about the Deerpark videos.

They tracked down a photo of the haunted hallway on the school's Facebook page. As you can see, the security camera that supposedly shot the footage doesn't match the actual video's angle. In the newer video, the angle is higher up, as if whoever filmed it has realized their mistake.

There are some other "tells" in the video that reveal the school's clever editing tricks. A locker door vanishes just before the papers fly out, then reappears. And when a chair is dragged in the second video, the lines on the floor disappear and reappear.

Skeptics say the school was just doing a little promotion for their Halloween "FearPark" event and got carried away. But true believers insist some parts of the video can't be explained.

Do you believe the school is haunted? Share these videos and tell us!