On Sunday, the Federal Bureau of Investigation secured a second search warrant to search the Hillary Clinton-related emails on former congressman Anthony Weiner's confiscated laptop.

The agency already had one search warrant to look at Weiner's emails but that warrant was specific to a different matter, his alleged sexting of a minor, according to an NBC News report.

Weiner is the estranged husband of Huma Abedin, vice chairwoman of Clinton's campaign for president who previously worked for the Clintons at both the State Department and the Clinton Foundation.

His laptop is said to contain some 650,000 emails and metadata suggested that at least 1,000 of them were sent to or received from Clinton's controversial bootleg homebrew server that she used while serving as secretary of state.

Experts speculate, and the FBI reportedly suspects, that it may contain illegally distributed classified material.

The discovery of the Weiner emails has thrown the 2016 presidential election campaign into an uproar.

Clinton partisans have started an aggressive spin campaign against FBI director James Comey for sending a letter to elected representatives in Congress Friday telling them that there was more investigation of Clinton to come.

Comey had been widely praised by Democrats and panned by Republicans for testifying in July that the investigation of Clinton was effectively closed and that he was not recommending charges to the Justice Department. With his letter Friday, the partisan sources of criticism and praise effectively reversed.

GOP nominee Donald Trump praised the decision and even publicly, though backhandedly thanked "major, major, major sleaze" Weiner himself for reopening this electoral can of worms.