A Department of Justice “taint” or “filter” team has been pouring over the documents taken from Mar-a-Lago by FBI agents during a raid on former President Donald Trump’s Florida residence, according to a senior law enforcement official familiar with the process.

It is a standard process for the DOJ to use a “taint” or “filter” team to go through documents in a situation like this, in part to identify documents that may be protected by the attorney-client privilege.

Fox News has learned that process began soon after the search warrant was executed on Aug. 8.

This could complicate the Trump legal team’s efforts to appoint a “Special Master” to examine nearly 20 boxes of documents taken from Mar-a-Lago, as many of them have likely already been filtered through and inspected by DOJ officials since the raid took place over two weeks ago.