Fox News confirmed that President Biden’s aides found at least one additional batch of classified documents at another location than the Penn Biden Center in Washington, D.C., which he used during his time as vice president under the Obama administration.

According to NBC News, the first to report the news, aides to Biden were searching for classified material in other locations and have been unable find any.

This development follows a separate batch classified documents that were discovered at the Penn Biden Center’s private office of Biden on Tuesday.

Both the FBI and Justice Department declined to comment.