After stepping out of the headlines and into the courtroom as part of a pre-midterms cease-fire, Robert Mueller appears poised to make his dramatic return to national politics with a new set of indictments centered around WikiLeaks and Roger Stone. According to multiple reports, the special counsel has been zeroing in on whether Stone or other Donald Trump associates had advance knowledge of Russia’s hacking of Clinton e-mails, which WikiLeaks later published. (Stone denies this.) A peripheral figure in the Stone saga is, of course, Julian Assange, who founded WikiLeaks in 2006, but has spent the last six years holed up in the Ecuadoran Embassy in London, evading authorities in both Sweden and the United States. If Mueller were to make his next move against Stone, he might also be expected to take action against Assange. So it is perhaps unsurprising that Assange’s name also surfaced this week, thanks to a slipup by the Department of Justice.

According to The Washington Post, an August 22 filing in an unrelated case mentions Assange twice by name. Arguing that a case involving a man accused of coercing a minor for sex should be kept sealed, Assistant U.S. Attorney Kellen Dwyer, who is also working on a long-standing case against WikiLeaks, wrote that both the charges and the arrest warrant “would need to remain sealed until Assange is arrested in connection with the charges in the criminal complaint and can therefore no longer evade or avoid arrest and extradition in this matter.” Elsewhere in the filing, Dwyer wrote that “due to the sophistication of the defendant and the publicity surrounding the case, no other procedure is likely to keep confidential the fact that Assange has been charged.” Seamus Hughes, a terrorism expert at the George Washington University, first noted both mentions. “To be clear, seems Freudian, it’s for a different completely unrelated case, every other page is not related to him,” he wrote on Twitter. The office “just appears to have Assange on the mind when filing motions to seal and used his name.”

Exactly what charges Assange is facing remains unclear. In the past, prosecutors have considered conspiracy, violating the Espionage Act, and theft of government property. During the Obama administration, the Justice Department held back on going after Assange amid concerns that doing so was similar to prosecuting a news outlet. (Charging someone for publishing accurate information, Assange’s lawyer Barry Pollack told The Guardian on Thursday, is “a dangerous path for a democracy to take.”) The recently ousted Jeff Sessions, however, took a more Draconian stance on government leaks, and prosecutors were reportedly told over the summer that they could start compiling a complaint. So far, the D.O.J. has not offered further details. “That was not the intended name for this filing,” Joshua Stueve, a spokesman for the United States Attorney’s Office for the Eastern District of Virginia, told The New York Times, explaining that “the court filing was made in error.”

Whether Assange will be charged as part of the Russia probe is also unknown, though it seems likely. Presumably, the mention of Assange’s name in legal documents has spooked Trumpworld, which is already on edge in anticipation of the next Mueller bombshell. According to Politico, the White House suspects more indictments are imminent, potentially targeting a cabal of Trump family members and associates for their connections to WikiLeaks. On Wednesday, the special counsel delivered a one-page motion to a Washington judge stating that former Trump campaign deputy chairman Rick Gates, who pleaded guilty to conspiracy against the U.S. and making a false statement in a federal investigation, “continues to cooperate with respect to several ongoing investigations.” Then, on Thursday, Mueller’s office and Paul Manafort’s lawyers jointly requested a 10-day extension to file a report pertaining to the former campaign chairman’s sentencing.