Police are investigating a social media threat that was posted on social media Monday against William Adams Middle School.

The post states a "mysterious shooter" will show up to the campus on Friday, Dec. 21. The post recommends that "everyone spread this around."

Alice Interim Police Chief Aniceto "Cheto" Perez has added extra security at WAMS for the next couple of days due to the threat. Police already patrol each Alice Independent School District campuses on a daily bases.

"The Alice Police Department is investigating this threat and our district is taking every precaution to ensure the safety of our students and staff. We will have police and our security personnel at our campuses throughout the reminder of the semester, as well as after the winter break," according to a post on the WAMS and Alice High School's Facebook pages. "Alice ISD will continue to work diligently with law enforcement agencies to make sure that the person(s) responsible for this threat will be prosecuted to the fullest extent of the law."

APD is following leads, but no one has been arrested or detained as of Tuesday morning. Several students have been interviewed in connection with the threat.

"We are taking (this matter) very serious," Perez said. "Whoever is caught will be prosecuted."

On Dec. 11, three teenagers were detained after school security found a handwritten note on the girls bathroom wall that stated there would be a school shooting at the campus also on the 21st. The girls were sent to a juvenile detention facility and charged with terroristic threat.

According to police, terroristic threats to the district are felonies.

This story is developing and AENJ will have details as they are released by investigators.