The special counsel Robert Mueller has turned in his final report in the Russia probe to Attorney General William Barr.

Barr will now prepare to submit a summary of Mueller's report to Congress in the coming days.

But Justice Department veterans told INSIDER that even with the release of the Mueller report, the Russia probe and the investigations related to it are far from over.

There are still myriad court cases, cooperation agreements, potential future indictments, and related investigations being handled by other US attorneys' offices that will continue well past the Mueller report's release.

On Friday, the special counsel Robert Mueller turned in his highly anticipated final report in the Russia investigation to Attorney General William Barr.

Mueller was tasked with investigating Russia's interference in the 2016 US election, whether members of President Donald Trump's campaign colluded with Moscow, and whether Trump sought to obstruct justice after the public learned of the investigation's existence.

Barr is now expected to prepare his own summary of Mueller's findings for Congress, which will in turn release Barr's summary to the public.

But Justice Department veterans cautioned to INSIDER that the release of Barr's summary of Mueller's findings does not necessarily signify the end of the Russia investigation. They pointed to, in particular, a plethora of court cases, cooperation agreements, and potential future indictments that could drop well after Barr submits his report to Congress.

Read more: Mueller's findings in the Russia probe could reportedly be delivered as soon as next week

President Donald Trump. Associated Press/Evan Vucci

Here are some of the major threads that experts say will continue past the release of the Mueller report: