On Tuesday, September 23rd, Joyce Clark Middle School in Sierra Vista was placed on lockdown. According to a Press Release issued by the Sierra Vista Police Department, a male juvenile student had posted a message on Instagram stating he "needed a school shooting." Get our free mobile appGoogle Maps Street View Google Maps Street View loading...Joyce Clark Middle School Placed on LockdownAccording to Corporal Scott Borgstadt of the Sierra Vista Police Department, school officials responded to the report of the threat by initiating lockdown procedures. After a thorough investigation, authorities determined that there was no immediate threat to the school community, and the lockdown was lifted. The Sierra Vista Police Department will continue to investigate the incident and is working closely with school officials to ensure appropriate measures are taken.