A "system failure" was responsible for an unusual tweet posted by an FBI Twitter account just days before the 2016 presidential election, according to an internal FBI report.

The report blamed a technical glitch for a Nov. 1, 2016 tweet sharing FBI records on the William J. Clinton Foundation.

That tweet linked to more than 100 pages of redacted documents, mainly regarding the investigation into former President Clinton's decision to pardon wealthy financier Marc Rich on his last day in office.

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The FBI report said that the account, @FBIRecordsVault, which had been dormant for a year, came back into use as the agency sought to fix other accounts.

The report determined that the records were "properly posted."

The FBI noted that public materials are automatically loaded to its online vault when they receive many requests under the Freedom of Information Act.

The tweet came days after former FBI Director James Comey James Brien ComeyDemocrats fear Russia interference could spoil bid to retake Senate Book: FBI sex crimes investigator helped trigger October 2016 public probe of Clinton emails Trump jabs at FBI director over testimony on Russia, antifa MORE ignited controversy by announcing that the bureau was reopening its investigation into then-Democratic presidential candidate Hillary Clinton Hillary Diane Rodham ClintonBiden leads Trump by 36 points nationally among Latinos: poll Democratic super PAC to hit Trump in battleground states over coronavirus deaths Battle lines drawn on precedent in Supreme Court fight MORE's use of a private email server during her tenure as secretary of State.

That announcement drew accusations that the FBI had tried to interfere in a presidential race. Clinton and several of her allies have pointed to Comey's announcement as a reason for her electoral loss to President Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE.

The investigation was reopened because of emails found on the laptop of Anthony Weiner, the husband of longtime Clinton aide Huma Abedin, who later pleaded guilty to sending obscene material to a teenage girl.