TULSA, Okla. -- Berryhill Schools announced just after 2:00 they were going into a non-drill lockdown on Friday.
Students say classrooms began barricading and they were hiding under their desk to prepare for an intruder in any way possible.
The Tulsa County Sheriff's Office said they were alerted from a student who received a Snapchat saying their classmate planned to "shoot up the school." Deputies believe the message was deleted and they never saw it. But all campuses used the lockdown as a precaution.
"I don't think it's something you should joke about. It's definitely a serious matter. Even if you're just joking... if you hear someone joking about it definitely turn their name into the principal's office or tell someone, tell an adult," 10th grader Maddie Miller said.
The lockdown was lifted as school wrapped up at 2:45, since the sheriff's office did not find additional evidence. Deputies did stay on campus until students cleared out for the day.
The sheriff's office is continuing their investigation. Staff said they always take these threats seriously.
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