(NBC News/Monica Alba, Frank Thorp V and Phil McCausland) — FBI Director James Comey wrote a new letter to 16 members of the House and Senate on Sunday stating that the Bureau will not change the conclusion it made in July, following an examination of newly revealed emails found related to the Hillary Clinton probe.

"Based on our review, we have not changed our conclusions that we expressed in July with respect to Secretary Clinton," FBI Director Comey wrote.

The investigative team had "been working around the clock to process and review" emails found on former New York congressman Anthony Weiner's laptop — using a program that only targeted the emails to and from Clinton's closest aide, Huma Abedin, within the time when Clinton was secretary of state.

The news comes after the FBI announced it would review a new batch of emails that appeared to be "pertinent" to the investigation that was suspended in July which had looked into Clinton's use of a private server.

Multiple federal sources told NBC News the emails were found as a part of an ongoing probe into Weiner's alleged illicit communication with an underage girl.

The letter did not disclose the nature of the emails.

On the Clinton campaign's plane, spokeswoman Jennifer Palmieri said she was "Glad to see" Comey affirmed the conclusion reached in July and that the "matter is resolved."

NBC News has reached out to the Trump campaign for comment.

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