18-year-old student arrested for school shooting threat on social media.

A student at J.P. Taravella High School in Coral Springs, Broward County, has been arrested and charged with 19 criminal charges over an alleged school shooting threat. Catrina Petit, 18, was accused of using another student's identity to sign on to a school computer to commit the crime. The threatening message quickly went viral on social media, causing false alarms at different schools in South Florida. Petit faces three counts of written threats, a second-degree felony; false report, a second-degree felony; and 15 counts of knowingly disrupting or interfering with the lawful administration or functions of an educational institution, a second-degree misdemeanor.