Attorney General Merrick Garland on Thursday appointed a special counsel to investigate the presence of documents with classified markings found at President Joe Biden’s home in Wilmington, Delaware, and at an office in Washington.

The announcement followed Biden’s acknowledgement Thursday morning that a document with classified markings from his time as vice president was found in his personal library, along with other documents found in his garage. Garland said Biden’s lawyers informed the Justice Department Thursday morning of the discovery of a classified document at Biden’s home, after FBI agents first retrieved other documents from his garage in December. It was disclosed on Monday that sensitive documents were found at the office of his former institute in Washington.

Robert Hur, the former Trump-appointed U.S. attorney in Maryland, will lead the investigation, taking over from the top Justice Department prosecutor in Chicago, John Lausch, who was earlier assigned by the department to investigate the matter. Hur is to begin his work soon.

The appointment of yet another special counsel to investigate the handling of classified documents is a remarkable turn of events, legally and politically, for a Justice Department that has spent months looking into the retention by Donald Trump of more than 300 documents with classification markings found at the former president’s Florida estate.

Though the situations are factually and legally different, the discovery of classified documents at two separate locations tied to Biden — as well as the appointment of a new special counsel — would almost certainly complicate any prosecution that the department might bring against Trump.

(AP)