Those accusations were apparently references to stories that emerged during the campaign. An aide to Mrs. Clinton (not Mrs. Clinton herself) told the F.B.I. that he had disposed of Mrs. Clinton’s old cellphones by “breaking them in half or hitting them with a hammer.”

An employee of the company that ran Mrs. Clinton’s private email server used a program called “BleachBit” to delete files; the F.B.I. concluded that Mrs. Clinton was unaware of the deletions.

It was Bill Clinton, Mrs. Clinton’s husband, who had a conversation with Loretta Lynch, who was serving as attorney general, on Ms. Lynch’s plane, leading her to recuse herself in the email case involving Mrs. Clinton.

The complaints about Mrs. Clinton came after a series of morning tweets in which Mr. Trump mocked federal investigators, saying they made up a “phony collusion with the Russians story” amid new reports that Robert S. Mueller III, the special counsel, is looking into whether Mr. Trump tried to obstruct justice in the case.