A 12-year-old Florida girl has committed suicide after she was allegedly bullied online by more than a dozen other girls, and a sheriff said Thursday that he is investigating whether he can file charges under a new state law that deals with cyber-bullying. The case follows several suicides by teens who were bullied through anonymous trolling on social media websites.

Sheriff Grady Judd said that Rebecca Ann Sedwick jumped to her death on Monday at an old cement facility in Lakeland, Fla. Investigators said she had been despondent after other girls had posted hateful messages about her online.

Sedwick was "absolutely terrorized on social media," Judd said.

The Lakeland Ledger reported that detectives found multiple social media applications in which Sedwick was frequently bullied with messages including "Go kill yourself," and "Why are you still alive?"

Judd said that the parents of all 15 girls believed to have been involved in the bullying have cooperated with detectives, and that several cellphones and laptops have been confiscated. He said charges -- including cyber-stalking -- could be filed.

"If we can get any evidence of a criminal offense, the person or persons involved will be punished," he said.

Students and parents from Sedwick's school said bullying is a problem, local news reported.

Other students complained that reporting bullying earns them the title of “snitch” among fellow students, and that school authorities have ignored their concerns.