FBI Deputy Director Dan Bongino stated on Thursday that his office had discovered materials from former FBI Director James Comey’s time in office inside a room that had previously been “hidden from us,” as the agency shifts resources to ongoing internal probes.

“I wouldn’t call it hidden, but hidden from us at least and not mentioned to us, and then we found stuff in there and a lot of it’s from the Comey-era, and we are working our damndest right now to declassify,” Bongino said during a May 29 interview with Fox News.

He continued, “I totally understand people saying, ‘Well, do it now.’ The process is [that] not all information is ours to declassify; some is other intelligence agencies, it’s not—we literally can’t do it.”