Hillary Clinton met Saturday morning with the FBI regarding the agency’s investigation into her use of a private email server for official correspondence while secretary of state.

The voluntary meeting lasted about three-and-a-half hours and was conducted at FBI headquarters in Washington, D.C., according to the Clinton campaign.

Clinton “is pleased to have had the opportunity to assist the Department of Justice in bringing this review to a conclusion” campaign spokesman Nick Merrill said in a statement. He also said Clinton, the presumptive Democratic presidential nominee, would have no further comment about the interview.

The campaign issued the statement Saturday shortly before 12:30 p.m. ET, practically minutes after Clinton returned to her Washington home, then departed again about 30 minutes later.

“Hillary Clinton has just taken the unprecedented step of becoming the first major party presidential candidate to be interviewed by the FBI as part of a criminal investigation surrounding her reckless conduct,” said Republican National Committee Chairman Reince Priebus. “We must ask ourselves if this is the kind of leadership we want in the White House.”

There was no immediate comment from the FBI or Justice Department Saturday.

Clinton’s use of a private server and email address — and whether classified information was mishandled as a result of that setup — has cast a shadow over her campaign from the start.

The FBI investigation is purportedly coming to a close, and the Clinton interview is considered among the final steps in the case.

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