The FBI carried out two searches at the University of Delaware in recent weeks in relation with a probe into US president Joe Biden's handling of classified documents, CNN reported. The report cited a source familiar with the investigation.
The searches occurred with the consent and cooperation of Joe Biden's legal team, the report added.
Earlier this month, US Justice Department conducted a three-and-a-half hour search of the president's beach house in Rehoboth, Delaware. However, Joe Biden's attorney said no documents with classified markings were found but some materials were taken for further review.
Materials were previously found at Joe Biden's home in Wilmington, Delaware, and at a Washington office he used during the time he served service as vice president under Barack Obama.