A laptop and thumb drive containing an archive of Hillary Clinton’s emails and thirteen mobile devices, 8 of which Clinton used while serving as secretary of state, are not able to be located, per documents released by the Federal Bureau of Investigation Friday.

The FBI released two batches of documents related to their investigation of Clinton’s handling of classified information. In one them it is revealed that Monica Hanley, a Clinton aide at the State Department, migrated Hillary’s emails from her private server to an “Archive Laptop” and “Archive thumb drive.”

Hanley started this process in the spring of 2013 using a laptop provided to her by Justin Cooper, an aide to Bill Clinton, the laptop was from the Clinton Foundation. Hanley completed the whole process from her private residence. The laptop and thumb drive where meant to be stored at Clinton’s homes in New York and Washington, D.C. “However, Hanley explained this did not occur as Hanley forgot to provide the Archive Laptop and the thumb drive to Clinton’s staff following the creation of the archive,” a FBI document states.

After locating the laptop in her personal residence in February of 2014, Hanley sent the laptop to a someone whose name is redacted. They who would then transfer Hillary’s emails from the Archive Laptop onto the Denver-based server Platte River Networks managed for Clinton in 2013. The unnamed person successfully transferred the emails to the Platte River Networks sever after uploading them to Gmail and then downloading them. Hanley told Platte River Networks to wipe the Archive Laptop, however they just deleted the emails and didn’t wipe the laptop. The document does not state whether anything was deleted from the thumb drive.

The unnamed person then shipped the archive laptop and thumb drive via United States Postal Service or United Parcel Service to a redacted person at a redacted location. The person who was meant to receive the laptop and thumb drive told the FBI they never received them.

“She advised that Clinton’s staff was moving offices at the time; and it would have been easy for the package to get lost during the transition period,” a FBI document states. “Neither Hanley nor [redacted] could identify the current whereabouts of the Archive Laptop or thumb drive containing the archive, and the FBI does not have either item in its possession.”

Another FBI document also reveals that Clinton used 13 different email capable mobile devices that the law firm representing Clinton was unable to find. Eight of these devices were used by Clinton while she was secretary of state. “As a result, the FBI was unable to acquire or forensically examine any of these 13 mobile devices,” a FBI document states.