Enlarge / WASHINGTON, DC – JULY 07: FBI Director James Comey testifies during a hearing before House Oversight and Government Reform Committee July 7, 2016 on Capitol Hill in Washington, DC. The committee held a hearing “Oversight of the State Department,” focusing on the FBI’s recommendation not to prosecute Democratic presidential candidate Hillary Clinton for maintaining a private e-mail server during her time as secretary of state. (credit: Alex Wong via Getty Images)

The Friday revelation sent heads spinning, from the left and the right, since there is less than two weeks before the presidential election. (Clinton, the Democratic nominee, faces Donald Trump on the GOP ticket on November 8.)

The development came three months after Comey publicly said Clinton or any member of her staff while she was secretary of state were cleared of any criminal wrongdoing in connection to Clinton’s use of a private e-mail server at her New York home. But on Friday, Comey wrote members of Congress that the bureau had recently discovered e-mail that might have passed through that server while conducting a separate investigation. The bureau was looking into Anthony Weiner, a politician and the husband of top Clinton aide Huma Abedin, in an unrelated sexting scandal.