During a search of the estate of former US President Donald Trump, FBI agents seized 11 sets of classified documents, some of which were marked top secret and under the law were intended for review only by special government agencies, writes The Wall Street Journal.

Four sets of documents were marked top secret, three were marked secret and three were marked confidential. The content of the seized documents is not given, the WSJ explains.

It is noted that the FBI agents took a total of about 20 boxes of belongings, folders with photographs, a handwritten note and a pardon document of his former adviser Roger Stone from Trump's home in Mar-a-Lago, Florida.

It is also indicated that the documents contained information about the President of France.