US President Barack Obama has implicitly criticised FBI directory James Comey over the new inquiry into Hillary Clinton’s email use.
He said US investigations should not operate on the basis of “innuendo” or “incomplete information”.
The FBI is now investigating new emails that may be linked to its probe into Mrs Clinton’s private email server.
Mr Comey has faced a fierce backlash for announcing the move just 11 days before the presidential election.
Mr Obama’s remarks are his first public comments since Mr Comey’s announcement on Friday that the FBI had discovered a new batch of emails that may or may not be relevant to an earlier, closed investigation into Democratic presidential candidate Mrs Clinton’s handling of classified information.
“I’ve made a very deliberate effort to make sure that I don’t look like I’m meddling,” Mr Obama said in an interview with website NowThisNew.
But he added: “I do think that there is a norm that when there are investigations we don’t operate on innuendo, we don’t operate on incomplete information, we don’t operate on leaks. We operate based on concrete decisions that are made.
“When this was investigated thoroughly the last time, the conclusion of the FBI, the conclusion of the justice department, the conclusion of repeated congressional investigations was that she had made some mistakes but that there wasn’t anything there that was prosecutable.”