Classes will continue as normal at Gainesville High School today, though with ramped-up security following a threatening note found Tuesday afternoon.

Gainesville City Schools Superintendent Merrianne Dyer confirmed there was a note stating “there would not be any more Gainesville High School after Thursday” found in a boy’s restroom on the school’s campus.

It’s thought to be a hoax, but Gainesville police are not taking any chances.

“School and security will search backpacks before students enter,” Dyer said.

Dyer said a student initially found the writing on the wall, and said an image of it has already been shared by several students via social networking sites such as Twitter and Facebook.

The note threatened the use of explosives and a gun.

“We are working with the Gainesville Police Department,” Dyer said. “We’ll take all precautions that they advise. We’ll have extra security at school (today), and we’ll inform parents of any changes through our phone messaging system as well as our email system.”

The Gainesville Police Department thoroughly searched the building following the note’s discovery, and officers remained on campus while athletics teams conducted practices after school.

Principal LaCrisia Larkin said a surveillance camera monitors the hallway by the bathroom, but footage would likely not be helpful as too many students are in that area to be able to pinpoint the possible author of the note. The video will be used by the police to assist in their investigation.

“Most of all, we are listening to our students and working with the Gainesville Police Department, of course, to see if there’s anything else we need to do,” Larkin said. “We are going to do everything possible to make sure our students are safe.”