A teenager will face criminal charges after a social media post targeted Coronado High School Thursday.
Some concerned students alerted staff to a threat made on social media, the Coronado Unified School District and the Coronado Police Department confirmed.
Soon after, the high school was placed on lockdown. Police sent an alert to the community advising that officers were on the CHS campus and looking into the threat.
Just before 11 a.m., Coronado Police sent out an alert that the campus had been deemed safe, though officers were staying on scene to investigate.
In a joint message, Superintendent Karl Mueller and Chief of Police Jon Froomin confirmed the source of the threat was detained off campus.
No details were given regarding the nature of the threat.
Police later said the 16-year old male student was taken into custody at his home in Coronado.
The unidentified teenager faces criminal charges and was booked into Juvenile Hall, police said.
Officials said schools will be reviewing their procedures in light of the lockdown to "ensure everything is done to maintain the safety and security of our schools."