This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

School districts and law enforcement in Southern California are on high alert due to a national trend of TikTok videos threatening school violence.

The posts warning of shooting and bomb threats at schools around the country Friday are not considered credible, according to law enforcement.

“Law enforcement agencies have investigated this threat and determined that it originated in Arizona and does not appear to be credible,” The Seal Beach Police Department stated in a Facebook post.

The threats are vague and do not refer to any specific schools, according to the police department.

School districts, including the Los Angeles Unified School District and William S. Hart Union High School District have also acknowledged the threats.

“This general threat is calling tomorrow. Friday, December, 17th ‘National School Shooting Day,’” the William S. Hart Union High School District stated.

The Santa Monica Police Department tweeted that they will remain highly visible around school campuses Friday due to the online threat.

The Irvine Unified School District also announced they will have an increased police presence Friday despite no specific threats against IUSD schools.

In a statement on Twitter, TikTok said it was working with law enforcement to investigate but that the trend hasn’t been found on its platform

“We handle even rumored threats with utmost seriousness,” the statement said, “which is why we’re working with law enforcement to look into warnings about potential violence at schools even though we have not found evidence of such threats originating or spreading via TikTok.”

TikTok said it has only found “videos discussing this rumor” and is working to remove “alarmist warnings that violate our misinformation policy.”

The threats come amid recent local incidents involving social media posts threatening Southland schools.

Earlier this week, Police in Whittier investigated reports that a student from Dexter Middle School threatened to show up for class with a handgun.

Police determined the student did not have access to a firearm and the threat was not credible.

In another incident this week, an apparent threat made against Brentwood Science Magnet School was also determined to be noncredible.

The recent threats have educators across the country on edge, particularly in the aftermath of a deadly November school shooting in Michigan.

Four students were killed when 15-year-old Ethan Crumbley allegedly opened fire at at Oxford High School.