Gun violence prevention group Brady Center is suing the Trump administration over its decision to allow blueprints for 3D guns to be uploaded and shared online.

In its statement, the organization said it wants the Department of State to show documents explaining why it cleared the distribution of blueprints to create 3D guns.

The Brady Center alleges the Department of State has not presented any documents in response to a Freedom of Information Act request filed more than five months ago.

"The Trump Administration must explain to the public why it chose to reverse longstanding State Department policy opposing publication of blueprints, and decide to allow terrorists and other dangerous people to make undetectable, untraceable guns with 3-D printers in complete anonymity," said Kris Brown, President of Brady Campaign and Center to Prevent Gun Violence, in a statement released Wednesday.

In July, the Department of State settled a lawsuit with Defense Distributed, which would allow the Texas-based non-profit organization to offer 3D gun blueprints online.

The settlement sparked a lawsuit from 19 states and the District of Columbia seeking a permanent ban on distributing blueprints. In August, a federal judge ruled the president or Congress should make the decision on their approval.

If approved, the blueprints would allow anyone with the correct equipment and materials to 3D-print a gun. The Brady Center and other critics of 3D guns say they can't be traced, and don't require a background check to obtain.

More:What is a 3D printed gun, and how is it legal? Your questions, answered

"Instead of making it infinitely easier for the wrong people to get their hands on guns, it’s the government’s responsibility to prevent the inevitable threats to its citizens posed by weapons that can pass through metal detectors in airports, schools, and other public places," Brown said.

More:Why the AR-15 keeps appearing at America's deadliest mass shootings

Follow Brett Molina on Twitter: @brettmolina23.