Set to expire this week, a U.S. district judge in Seattle extended a temporary restraining order against a company distributing blueprints for 3D-printed guns online.

U.S. District Judge Robert Lasnik ruled to extend the restraining order because the ability to publish the blueprints could cause “irreparable harm.”

According to Judge Lasnik’s order: “Promising to detect the undetectable while at the same time removing a significant regulatory hurdle to the proliferation of these weapons — both domestically and internationally — rings hollow and in no way ameliorates, much less avoids, the harms that are likely to befall the states if an injunction is not issued.”

The 3D-printed gun blueprints, which briefly became available online in July, spurred government officials to action in the days following their release, as background checks are not required for purchasing the blueprints and known criminals can easily access them.

Following a July ruling from the U.S. Justice Department declaring that the blueprints can be made available for download, Defense Distributed, the website offering the plans, released the blueprints for nine different gun designs, days earlier than the previously announced release date of August 1.

As such, more than a dozen states filed suit seeking an emergency ban on the blueprints, which was originally granted by Judge Lasnick and was set to expire this week.