Donald Trump campaign manager Kellyanne Conway suggested Tuesday night that FBI Director James Comey may yet change his mind and recommend charges against Hillary Clinton, or call for a special prosecutor to investigate her.

Conway, a former GOP pollster, told Fox News that Comey was "exhausted" with the former secretary of state's email server scandal, which prompted him not to pursue a case against her.

"He went ahead and he gave out what he thought was a report to go against indicting her for, you know, for her email server but made very clear to all of us in the public that he knows she didn't tell the truth," Conway said on Fox News. "I think he is just exhausted by that — that doesn't mean as we learn more facts that he can't change his mind and we can't go through the other route, which is through a special prosecutor."

Trump called for the Justice Department to appoint a special prosecutor to go after Clinton for actions related to her email scandal and "pay-to-play" State Department, the Republican nominee told attendees at an Akron, Ohio, rally Monday evening.

"The Justice Department is required to appoint an independent special prosecutor because it has proven itself to be, really, sadly, a political arm of the White House. Nobody has ever seen anything like this before," said Trump. "The amounts involved, the favors done and the significant number of times it was done require an expedited investigation by a special prosecutor immediately, immediately, immediately."