Jesus Chavez, a 34-year-old resident of Lynwood, has been taken into police custody after causing a scene at the Kaiser Permanente Downey Medical Center around the Los Angeles area. The suspect was reportedly waiting for an appointment at the facility when he became unruly, threatening and violent.

While in the waiting area, Chavez suddenly stood up and grabbed a nearby chair. He tossed the chair directly through a glass window before pulling out his firearm. One witness who was in the waiting room confirmed to news journalists that the suspect was agitated because he hadn’t been seen for his appointment yet. The individual was ranting about waiting for more than half an hour, and he was screaming “I need to see the doctor now!”

The weapon immediately prompted a widespread lockdown of the hospital. The hospital’s security guard rushed over while at least 40 different people took cover. Police arrived to lead out the patients. Several witnesses were incredibly disturbed because the incident occurred on the 17th anniversary of the September 11th terrorist attacks. Several employees will be provided counseling to help them overcome the terrifying ordeal.

Police confirmed that the suspect surrendered without incident a short time later. Police are still unclear on how the man was able to sneak a weapon into the building, and the entire incident is under strict investigation. Hospital staff and patients were thankfully prepared for this occurrence. The center had recently performed several active-shooter drills, so everyone was able to safely take cover, close doors and follow police commands during the lockdown.