Within the past month, Special Counsel Robert Mueller has asked the Department of Justice to turn over a wide range of documents, marking the first time he has issued a records request to the office that oversees his investigation.
In particular, Mueller's investigators are keen to obtain emails related to the firing of FBI Director James Comey and the earlier decision of Attorney General Jeff Sessions to recuse himself from the entire matter, according to a source who has not seen the specific request but was told about it.
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Mueller's investigators now seek not only communications between Justice Department officials themselves, but also any communications with White House counterparts, the source said. Before this request, investigators asked former senior Justice Department officials for information from their time at the department, ABC News was told.
This is not the first time Mueller has reached into the current DOJ for information, however. His team interviewed deputy Attorney General Rod Rosenstein over the summer.
Mueller is investigating, among other things, whether President Trump obstructed justice by firing Comey last May.
Read more: Special Counsel sends wide-ranging request for documents to Justice Department (ABC News)
Mueller’s team interviewed Rosenstein over the summer (Politico)