Hillary Clinton's newest campaign headache arrived Friday afternoon by way of the FBI, which announced it was reopening its investigation into her private email server.

The investigation had concluded in July, even though FBI chief James Comey said she had been "extremely careless," sending national security information through an unsecured private email server.

As with so many of her problems during her run for the Oval Office, it appears she can blame this one, too, on sex and emails. This time it's apparently information discovered in the sexting investigation of former congressman Anthony Weiner, the estranged husband of her closest aide, Huma Abedin.

CNBC reported the additional information that Comey cited is from emails or other electronic data from devices owned by Weiner and Abedin.

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The devices were seized as part of the FBI's investigation into allegations that Weiner had sent text messages to a minor in North Carolina, allegedly requesting "nudity."

NBC News reported Weiner's cellphone records also had been subpoenaed.

GOP presidential candidate Donald Trump, meanwhile, was calling on the nation to not allow such activity to infest the Oval Office:

When Comey announced the reopening of the investigation, he explained that the information that prompted the move came in a probe unrelated to the original review of Clinton's use of a private email server.

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Reacting to the news, interim Democratic National Committee Chairwoman Donna Brazile simply tweeted, "Good grief."

The FBI's stunning turnaround caught many off-guard, including the Clinton campaign, but House Judiciary Committee Chairman Bob Goodlatte, R-Va., said it shouldn't be a surprise.

"The more we learn about Secretary Clinton's use of a private email server, the clearer it becomes that she and her associates committed wrongdoing and jeopardized national security," he said.

Clinton campaign Chairman John Podesta immediately demanded more information from the FBI.

"We have no idea what those emails [that have come to light] are and the director himself notes they may not even be significant," he said.

The maelstrom hit only 11 days before the general election, meaning the U.S. could elect a candidate facing potential criminal charges.

Comey said the FBI was working immediately to determine if the suspect emails "contain classified information" and are significant to the investigation.

GOP chairman Reince Priebus said, "This stunning development raises serious questions about what records may not have been turned over and why, and whether they show intent to violate the law."

U.S. Rep. BlakeFarenthold, R-Texas, said: "It's reassuring to see the FBI is willing to consider new evidence in the Hillary Clinton investigation. Many Americans, including me, lost faith in the FBI after Director Comey initially let Secretary Clinton off the hook for mishandling of classified material. Hopefully, the result of this additional investigation will get to the truth and reassure the American people that no one is above the law."

WND reported weeks ago on evidence that Clinton's chief of staff at the State Department, Cheryl Mills, may have received classified national security information through one of two or three personal, unsecured email accounts she regularly used to communicate with Abedin.

The evidence is in a cache of emails released by Judicial Watch, as well in Clinton-related emails attached as exhibits to the deposition Judicial Watch took with Mills in a lawsuit regarding Clinton’s use of a private email server as secretary of state.

Approximately 10 percent of Abedin's emails released through Judicial Watch Freedom of Information Act requests were addressed to one of Mills' various personal email addresses.

Several were found to contain such highly sensitive material that the State Department redacted 100 percent of the content pages, marking many pages with a bold stamp reading "PAGE DENIED."

WND reported Aug. 26 that of the more than 160 emails in the latest Judicial Watch release, some 110 emails – two-thirds of the total – were forwarded by Abedin to two personal addresses she controlled.

The Washington Times reported in August 2015 that the State Department had admitted to a federal judge that Abedin and Mills used personal email accounts to conduct government business in addition to Clinton’s private clintonemail.com to transact State Department business.

In a statement released by his campaign, Trump noted, "Hillary Clinton's corruption is on a scale we have never seen before. We must not let her take her criminal scheme into the Oval Office.

"I have great respect for the fact that the FBI and the DOJ are now willing to have the courage to right the horrible mistake that they made. This was a grave miscarriage of justice that the American people fully understand. It is everybody's hope that it is about to be corrected."

Trump also commended Abedin two months ago when she announced she was leaving Weiner.

"I know Anthony Weiner well, and she will be far better off without him. I only worry for the country in that Hillary Clinton was careless and negligent in allowing Weiner to have such close proximity to highly classified information. Who knows what he learned and who he told? It's just another example of Hillary Clinton's bad judgment. It is possible that our country and its security have been compromised by this."

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