We are getting reports of an active shooter situation at Travis Air Base base just outside Fairfield, California.

Officials at the base posted a “real world” security alert on the Travis AFB Facebook page just before 3:30 p.m. Wednesday asking people to shelter in place and to lock doors and windows.

“Travis Air Force Base is currently responding to a security incident,” Fairfield Police Department said this afternoon. “More details will be released as they become available. The public is being asked to stay away from the base to ensure emergency responders can respond accordingly.”

Travis AFB had been conducting exercise drills earlier today, but officials at the base have confirmed this is a “real world security incident,” not a drill.

Security alert @Travis60AMW. Shelter in place. Lock doors/windows. Await further info. Follow Travis Facebook page for updates.

— Travis AFB Official (@Travis60AMW) June 14, 2017

#UPDATE Travis Air Force Base confirmed an active shooter situation. The base did not provide details on injuries or any deaths.

— FOX5 Las Vegas (@FOX5Vegas) June 14, 2017

Loudspeaker outside Travis Air Force Base: Real World…LockDown. pic.twitter.com/WALDZNTFPs

— stevelarge (@largesteven) June 14, 2017

Witness: Active shooter alert at Travis Air Force Basehttps://t.co/B4XPWVyaba pic.twitter.com/ShY8cIyzhG

— CBS Sacramento CBS13 (@CBSSacramento) June 14, 2017

Travis has been involved in a base-wide exercise, but the situation at hand is a real-world alert.

— Travis AFB Official (@Travis60AMW) June 14, 2017

Security Alert Prompts Shelter In Place At Travis Air Force Base – CBS San Francisco https://t.co/NeZL8wYCmo

— Deborah. 🚂💨🇺🇸🇺🇸🇺🇸 👠MIGHTY 200⭐️ (@deborahjuanita4) June 14, 2017

We will update you on the situation as more information becomes available.

UPDATE:

It appears the lockdown on Travis AFB has been lifted at this time.

Travis Air Force Base reports "real world security incident"; lock down lifted https://t.co/iwDYVVpuuv

— Sean Gallagher 高老鼠 🐭💻⚒ (@thepacketrat) June 15, 2017

Simultaneously, reports the incident may have been a false alarm are also surfacing:

UPDATE: Travis Air Force base incident was FALSE ALARM. Officials say they responded to reports of gun shots & put base on lockdown https://t.co/wI7aRrnlPp

— Christal Hayes (@Journo_Christal) June 15, 2017

The Sacremento Bee reports:

“There were reports of potential gunshots outside of the base exchange. Emergency personnel responded immediately,” Staff Sgt. Nicole Leidholm said. “No shooter was found, and the base lock down was lifted.

“We’ll be looking into the details of what surrounded it.”

Officials at Travis Air Force Base have confirmed the active shooter reports were FALSE, posting the following update on their Facebook page just minutes ago:

Glad this was not an active shooter situation, but we’ll continue to update you on what prompted the lockdown on Travis Air Force Base.