The US State Department has reopened an internal investigation of possible mishandling of classified information by Hillary Clinton and senior aides.
The investigation is restarting following the decision by the Justice Department not to pursue a criminal investigation, spokesman John Kirby said.
The State Department suspended its review in April to avoid interfering with the FBI's inquiry.
Mr Kirby set no deadline for the investigation's completion.
On Tuesday, FBI Director James Comey said Clinton had been "careless" when when handling her emails.
The Democratic presidential contender has been the subject of a long-running controversy over her use of private email while she was Secretary of State until early 2013.