While investigating if Russia colluded with the Trump campaign during the 2016 presidential election, Special Counsel Robert Mueller and his team have obtained a mysterious “nude selfie.”

At least that’s according to a court filing by Concord Management and Consulting, an alleged Russian state-controlled troll farm which has been indicted as part of the investigation.

In their motion, Concord Management claim Mueller and his team are unlawfully keeping “millions of pages” of evidence – including the lewd photo – as part of the discovery process.

Mueller is arguing the evidence should only be shared with the U.S. District Court for the District of Columbia regarding “because the additional information is classified for reasons of national security.”

In his discovery filing, Concord Management lawyer Eric Dubelier had a response to that notion. “Could the manner in which he collected a nude selfie really threaten the national security of the United States?” he asked.

It’s not clear where the alleged nude picture came from, who had taken it, or who it depicts. However, based on the language used by both parties, it may be of someone in a top office.

Concord Management is accused of conspiring against the U.S. by using fake social media trolls to “sow discord” in the country during the election process.