Emergency workers from around San Diego arrived quickly at the medical center in the center of Balboa Park on Tuesday morning after reports were received of an active shooter.

Navy Petty Officer King, an X-Ray instructor at the medical center, was waiting outside like everyone else. Some of his students had reached out to him to check on his safety.



“I just hope no one is hurt today,” King said while he waited for word on what was going on inside the facility.



NBC 7 spoke with a source whose mother was locked down inside the Occupational Room on the second floor of Building 26. She said her mother sent her a text message saying everyone was safe. They were told to barricade the door, stay quiet and shelter in place.

NBC7 also spoke with representatives inside the facility's Continuous Improvement Department, at Building 6-5, and at Building 1-3, the facility's Dialysis Center, who said everyone inside those buildings was safe. They were all told to shelter in place and remain on lockdown..

By 10:05 a.m., officials were seen leading people out of the facility with their hands up. A law enforcement official told NBC News’ Pete Williams an initial sweep of the building turned up no forensic evidence of shots fired. They were checking rooms a second time and working to locate the person who made the original report.

!UPDATE/REMINDER!



Investigation still ongoing at NMCSD. All personnel continue to remain clear of NMCSD and... https://t.co/aQTiroVYgS — NBSD (@NavBaseSD) January 26, 2016

Meanwhile, amid the investigation at NMCSD, several temporary lockdowns were activated,