The State Department is being sued for records related to the selective editing of video from a 2013 press briefing, in which a spokeswoman seemed to admitted at officials might not have always told the truth about negotiations with Iran over nuclear proliferation.

Judicial Watch sued the department Thursday in pursuit of its Freedom of Information Act request for documentation of the circumstances surrounding the manipulation of the video.

State Department officials initially blamed the missing footage on a "glitch" before acknowledging that someone within the agency had directed a technician to scrub the unflattering exchange from the press archives. However, officials have said they can't yet determine who ordered the editing.

The agency claims to have opened an internal investigation into the incident, but after nearly three months, officials have provided no new information about how or why the clip was deleted.

During the Dec. 2, 2013 briefing, Fox News reporter James Rosen pressed spokeswoman Jen Psaki on whether nuclear talks with Iran had begun secretly in 2011. He also asked her if officials would ever lie publicly in order to preserve secret negotiations.

"James, I think there are times where diplomacy needs privacy in order to progress," Psaki responded in the portion of the video that was cut from the archives. "This is a good example of that."

Judicial Watch filed its FOIA request in June amid controversy over the agency's video tampering. The group sought any records created between the present and the date of the 2013 briefing, including any correspondence regarding the internal probe State Department officials claimed to have launched.

Specifically, court documents show Judicial Watch pushed for emails or memos written by Psaki and State Department spokesman John Kirby, among others.