The heavily-redacted documents, almost 200 pages, include summaries of interviews with senior Clinton aides concerning the private email server, and brings to light details previously unknown.

During the interview with Huma Abedin, who served as deputy chief of staff under Clinton, the FBI reportedly presented her with an email exchange between Clinton and a person she did not recognize. The FBI then revealed the unknown person’s name was believed to be a pseudonym used by Obama. Abedin reacted by saying, “How is this not classified?”

This exchange could expose Obama as having mislead the public on the issue, given his 2015 statement that he found out about Clinton’s use of a private email server “the same time everybody else learned it, through news reports.”

The State Department will not make public the emails Clinton exchanged with Obama, citing “presidential communications privilege,” as reason to withhold the emails under the Freedom of Information Act, Politico reports.

FBI report reveals that Obama used a secret pseudonym to send emails Clinton and these emails ended up on her private server.

— WikiLeaks (@wikileaks) September 24, 2016

The documents also include interview notes with other senior Clinton aides; Cheryl Mills, Jake Sullivan and former Bill Clinton advisor Justin Cooper, who registered the clintonemail.com domain. Romanian hacker Guccifer and a number of state department officials were also interviewed.

The latest FBI document cache also refers to the engineer who used BleachBit to permanently delete emails from Clinton’s server soon after the House Benghazi Committee issued a subpoena for documents relating to the 2012 attack on the US embassy in Libya. According to the engineer, he did this “of his own accord based on his normal practices as an engineer.”

Documents show employees from Platte River Networks, the IT company who managed Clinton’s emails, referring to a request to wipe emails in 2014 as the “Hilary [sic] cover-up operation”. An employee told the FBI this was a joke.

Clinton aide, Bryan Pagliano, said concerns were raised about whether Clinton’s server created a “federal records retention issue” by state department officials in 2009 or 2010. When he communicated these concerns to Mills, however, she said that Clinton’s  predecessor, Colin Powell, had also used private email.

The reports further reveal Clinton’s alleged ineptitude with technology, with aides claiming she “could not use a computer,” and didn’t know her email password.

Abedin said she had two computers in her State Department office, one for unclassified communications and another for classified communications. She did most of her work on the unclassified computer and would go “days or weeks without logging into the classified system.”

One redacted interviewee described himself as a “Clintonista” and said he has a relationship with the Clintons dating back years. He said he would meet with Clinton four or five times a day and initially traveled with her until she was comfortable with the position of secretary of state.