The FBI released 58-pages documents on Friday detailing its investigation into Hillary Clinton's use of a private email server while she was secretary of state, and a summary of her interview with agents, providing the most thorough look yet at the probe that has dogged the campaign of the Democratic presidential nominee. CNN reports: Clinton repeatedly told the FBI she lacked recollection of key events. She said she "could not recall any briefing or training by State related to the retention of federal records or handling classified information," according to the FBI's notes of their July 2 interview with Clinton. Fallout from Clinton's use of a private email server continues to dog the Democratic presidential nominee's campaign, as her lead over her Republican counterpart Donald Trump has been cut in half since her post convention bounce last month, according to CNN's Poll of Polls released Thursday. Trump and other Republicans have stepped up their attacks connecting the emails to questions over whether Clinton gave preferential treatment to donors to her family's foundation. The bureau is making the information public in response to numerous Freedom of Information Act requests, including from CNN. "Today the FBI is releasing a summary of former Secretary of State Hillary Clinton's July 2, 2016 interview with the FBI concerning allegations that classified information was improperly stored or transmitted on a personal e-mail server she used during her tenure," the agency said in a statement. "We also are releasing a factual summary of the FBI's investigation into this matter."