The email scandal has had a significant impact on voters' perceptions of Clinton's trustworthiness

The drama over Hillary Clinton‘s private email server just turned more serious.

The Democratic presidential candidate spoke to the F.B.I. on Saturday for approximately 3½ hours about her controversial email practices while serving as Secretary of State during President Obama’s first term, according to a statement from Clinton campaign spokesman Nick Merrill.

“Secretary Clinton gave a voluntary interview this morning about her email arrangements while she was Secretary. She is pleased to have had the opportunity to assist the Department of Justice in bringing this review to a conclusion,” Merrill said.

The Clinton campaign would not comment further on the content of the interview, which took place at F.B.I. headquarters in Washington, D.C., nor release any new details on the ongoing investigation.

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Clinton has been plagued for over a year by questions of the legality of her using a private email server to conduct government business while in office. A State Department report released in May concluded that Clinton’s use of a private server was “not an appropriate method” of preserving government documents and violated government policies on email use and records retention.

The long-lasting investigation has taken a toll on voters’ perceptions of Clinton’s trustworthiness. A poll released by Quinnipiac University earlier this week showed that 45 percent of Americans believe her Republican opponent Donald Trump is a more trustworthy presidential candidate, compared to 37 percent who believe Clinton is more trustworthy.

Clinton has brushed aside the drama surround her email practices. She responded to the State Department report, saying, “It’s the same story” and that it’s still “not an issue.” And before the report’s release, Clinton laughed off Republicans’ claims that the investigation will end with Clinton’s arrest.

“I know that they live in that world of fantasy and hope because they’ve got a mess on their hands on the Republican side,” she said in an interview with Matt Lauer in April. “That is not going to happen … there is not even the remotest chance that it’s going to happen.”