By Julia Harte

(Reuters) – U.S. law enforcement and schools responded to vague warnings about violence at school on Friday by sending bulletins to parents and increasing security, and in some cases, cancelling classes.

Bulletins to parents mostly referred to Tik Tok posts.

Florida’s Palm Beach County is home to one of the country’s most populous school districts. It stated that they were aware of Tik Tok’s “video circulating on Tik Tok nationwide, encouraging violence within schools” in Friday’s letter.

Tik Tok claimed that its platform had not been capable of finding credible threats, but only alarmist warnings about rumored threats. The alleged video was not provided by Palm Beach County Schools.

Tik Tok stated in a statement that while they continue to search our platform for such content, “we are concerned that the proliferation of local media reports about an alleged trend which has not been discovered on the platform might end up inciting real world harm.”

According to the U.S. Department of Homeland Security, it stated in a Twitter statement (NYSE:), Friday that no information was available indicating specific threats to schools, but encouraged residents to “remain vigilant.”

As the United States reeled from its worst school shooting, 2021’s November attack on a Michigan high school left at least four people dead and wounded. The latest in a series of American school shootings that have been fatal for decades.

In messages sent to parents by law enforcement and schools on Thursday and Friday, most noted that these week’s threats of attack were not targeted at the school and were not credible.

Numerous schools across the nation cancelled classes Friday. However, it is not clear if the cancellations were related to Tik Tok threats.

Gilroy High School in California was notified online by the Superintendent of the Unified School District that it would cancel classes on Friday due to threats of violence from “several social-media accounts”

Gilroy High School didn’t respond to inquiries about threats.

However, other schools didn’t cancel classes and heightened security. Fitchburg’s public school system in Massachusetts announced Thursday that it would send police to all schools within the area on Friday in response to an alleged Tik Tok threat.

Questions about this post were not answered by the Fitchburg public schools system.