Parents and students at Mainland High School noticed an uptick in security Friday after three students were arrested after reports of a shooting turned out to be firecrackers being set off during school Thursday.

Student arrested on Florida high school campus with weapon | Lockdown lifted

A student at a Florida high school was arrested after bringing a weapon on campus, sparking the second Sunshine State school lockdown in as many days. 

According to police, a social media post Friday morning showed an unidentified student with a gun. That prompted a Code Red alert and a large police response to Lake Brantley High School in Altamonte Springs. 

The lockdown was lifted shortly before 10 a.m., with a student in custody.

On Thursday, three students reportedly set off fireworks inside Mainland High School in Daytona Beach, leading to panic and a massive police response. They were taken into custody. Another person was taken into custody, accused of posting a threat, according to WESH 2.

»MORE: Student arrested, another ID’d in Florida school shooting scare

A Code Red Active Shooter alert was announced, and the school went into lockdown. Dozens of police sped to the scene.

Police cleared buildings and found no shell casings but a few firecracker wrappers in the stairwell. 

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