UPDATE: Gates reopen at Redstone Arsenal after possible active shooter

HUNTSVILLE, Alabama (WDEF) — UPDATE 5:30 p.m. EDT: Redstone Arsenal posted an update on their Facebook page.

HUNTSVILLE, Alabama (AP) – The Latest on reports of an active shooter at an Alabama military post (all times local):

4 p.m.

The commander of an Alabama military post says two 911 calls about a potential active shooter prompted a lockdown at the installation but no shooter was ever found and no shots were fired.

Col. Tom Holliday, the garrison commander at Redstone Arsenal near Huntsville, said Tuesday afternoon that the 911 calls came from a building on the installation. He says the lockdown worked as planned and believes that the military post did not overreact.

He says there will be an investigation and officials are looking into the possibility of a hoax.

An active shooter drill planned for Wednesday will not be held.

HUNTSVILLE, Alabama (WDEF) — UPDATE 2:05 p.m. EDT: Redstone Arsenal posted an update on the situation on their Facebook page.

BREAKING: Redstone Arsenal scene cleared of potential active shooters, according to Army Contracting Commandhttps://t.co/0XxKT5KrIf pic.twitter.com/PFeaYAPvN5

— David Kumbroch WHNT (@davidknews) June 27, 2017

HUNTSVILLE, Alabama (WDEF) — UPDATE: 1:40 p.m. EDT:

Huntsville CBS affiliate WHNT is now reporting all gates at the Redstone Arsenal have reopened.

BREAKING NEWS: As of 12:30pm, restriction lifted on Redstone Arsenal. People can now move freely on base.

— Michelle Stark (@mstarktweets) June 27, 2017

All RSA Gates are open. Avoid the area around the RSA Sparkman Complex until further notice. MSFC personnel may resume normal duties.

— David Kumbroch WHNT (@davidknews) June 27, 2017

Arsenal Spokesperson: “If there’s not a good reason to come onto Arsenal, avoid it.”

— Chris Davis WHNT (@ChrisDavisMMJ) June 27, 2017

BREAKING: Per Chris Colster, all gates have reopened at Redstone Arsenal.

— Chris Davis WHNT (@ChrisDavisMMJ) June 27, 2017

My office is being updated about the situation @TeamREDSTONE I will continue to closely monitor and pray for a peaceful and quick resolution

— Kay Ivey (@GovernorKayIvey) June 27, 2017

HUNTSVILLE, Alabama (WDEF) – Officials at the Redstone Arsenal in Huntsville has issued a “Run, Hide, Fight” advisory to employees.

The email warned of a possible active shooter at the Arsenal.

The installation is now locked down.

A spokesman says he is unaware of any injuries and hopes employees will resume work in a few hours.

Reporters at WHNT report that ambulances are responding, but that is standard procedure for such a warning.

Employees report an intercom report said this was not a drill and all gates are closed.

A spouse of one worker reports there were sounds of shots fired on the second floor of the Sparkman Center.

Redstone Arsenal is a U.S. Army post that houses the United States Army Materiel Command, Army’s Aviation and Missile Command, the Missile Defense Agency of the Department of Defense, and NASA’s Marshall Space Flight Center.

There are up to 40,000 workers at the Arsenal each day.

Redstone’s Chris Colster said no injuries or casualties that he is aware of, won’t confirm Sparkman Center location https://t.co/i9kSs6i5BL

— Leada Gore (@LeadaGore) June 27, 2017

Redirecting traffic at gate 9 and all other gates @whnt pic.twitter.com/53AmCuYTFD

— Caitlan Dallas WHNT (@cdallasWHNT) June 27, 2017

Here’s area we’re talking about on Redstone Arsenal where possible active shooter has been reported, geographic context of Sparkman Center pic.twitter.com/D2dsFpE078

— David Kumbroch WHNT (@davidknews) June 27, 2017

My staff and I are monitoring situation at Redstone Arsenal. Please join me in praying for the safety of everyone on base.

— Rep. Robert Aderholt (@Robert_Aderholt) June 27, 2017