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CORAL SPRINGS (SNN TV) – An 18-year-old Florida girl faces 19 charges related to a mass shooting threat hoax.

Catrina Petit of J.P. Taravella High School is charged with four second-degree felonies and 15 misdemeanors for threatening to commit school shootings on the Snapchat app. Coral Springs police arrested Petit Friday.

The department says she used another student’s name and computer to make the threat. The Broward County School District says Petit claims she sent the threat as a “joke.” The district also says other students were victimized as their accounts were hacked and their names released.

Coral Springs Police said last week they believed there was no credible threat to Coral Springs schools. They added the post had been copied and edited with different school names across Broward County.

The Herald-Tribune reports the message went viral and was also reported in Palm Beach, Saint Lucie, Okeechobee, and Volusia counties, among others, and also seen by parents in other states.