The US Army post Redstone Arsenal in Madison County, Alabama, warned of a possible active shooter situation on Tuesday.

WASHINGTON (Sputnik) — The area is currently on lockdown.

"Possible active shooter on the Arsenal. Installation is locked down. Run hide fight," the arsenal said in a Twitter message.

Possible active shooter on the Arsenal. Installation is locked down. Run hide fight. — Redstone Arsenal (@TeamREDSTONE) 27 июня 2017 г.

The congressman for Alabama's Fifth District, Mo Brooks, said he was monitoring the situation.

"Monitoring…active shooter situation. Please stay alert with updates — praying for all those on base," Brooks tweeted.

Monitoring @TeamREDSTONE active shooter situation. Please stay alert with updates — praying for all those on base. — Mo Brooks (@RepMoBrooks) 27 июня 2017 г.

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) 27 июня 2017 г.

The reported active shooter situation at the US Army post in Madison County, Alabama, is currently under investigation, but the lockdown has been partially lifted, Redstone Arsenal said later in the day.

"As of 12:30 p.m., employees can move about the post in an orderly fashion, but are asked to keep movements limited, as needed," the statement said. "This incident is under investigation."

"Movement remains restricted in the area near the intersections and roads around the Sparkman Center," the statement said.

No casualties have been reported at the Redstone Arsenal.