It is noted that Pence's lawyer found about ten secret documents in the politician's house in the city of Carmel, Indiana.
The documents were handed over to the FBI.
Bureau agents, along with US Department of Justice specialists, are studying the contents of the documents and how they ended up in Pence's house.
Pence served as vice president during the presidency of Donald Trump.
Earlier, the lawyer of the American President, Bob Bauer, said that during a check in Joe Biden's house in Wilmington, US Justice Department officials discovered a new portion of confidential documents.