The FBI has said it will not recommend charges against Clinton, despite re-opening the investigation last week into her handling of classified information during her time as US Secretary of State.

FBI Director James Comey made the announcement in a letter to the US Congress, informing them that the results of their most recent investigation into Hillary Clinton's use of a personal email server had led to no changes to the conclusions the organization expressed in July.

The FBI had re-opened the investigation into Clinton's email practices after finding a large cache of emails on a device belonging to the husband of top aide Huma Abedin. Abedin's estranged husband, former Congressman Anthony Weiner, was being investigated for an unrelated matter.

Comey's letter ended, "Based on our review, we have not changed our conclusions that we expressed in July with respect to Secretary Clinton." He also praised the FBI for doing "an extraordinary amount of high-quality work in a short period of time."

— Jim Acosta (@Acosta) November 6, 2016

Over US Justice Department objections, Comey announced on October 28 that the new emails had been discovered, in a move widely criticized for being disruptive to the ongoing presidential campaign.

At his rally in Minnesota Sunday afternoon, Donald Trump made no mention of the now re-closed FBI investigation, but he did say that Clinton "will be under investigation for a long, long time, likely concluding in a criminal trial," and repeated his assertion that the Democratic candidate is protected by "a rigged system."