LAKESIDE, Calif. (KGTV) -- The San Diego Sheriff's department is investigating a violence threat on Tierra Del Sol Middle School. On Tuesda, around 6:48 p.m., the school posted about the threat on Facebook, saying school staff "discovered inappropriate drawings, racial slurs and a threat written in a student bathroom." In the post the school went on to say that the student suspected of the threats was immediately apprehended and the Sheriff's Department deemed the threat non-credible. The Sheriff's Department conducted an investigation and reported that there was no evidence to suggest the threat has any validity. Out of cation, additional law enforcement officers will be posted in and around the campus on Wednesday.