Internal FBI documents unsealed Thursday indicate that Peter Strzok -- the now-disgraced anti-Trump former head of FBI counterintelligence -- ordered the investigation of former national security adviser Michael Flynn to remain open even after it was slated to be closed due to a lack of so-called "derogatory" information.

The materials surfaced just a day after explosive FBI communications revealed that top bureau officials discussed their motivations for interviewing Flynn in the White House on January 24, 2017 -- and openly questioned if their "goal" was "to get him to lie, so we can prosecute him or get him fired."

Those handwritten notes -- written by the FBI's former head of counterintelligence Bill Priestap, Fox News is told -- suggested that agents planned in the alternative to get Flynn "to admit to breaking the Logan Act" when he spoke to then-Russian Ambassador Sergey Kislyak during the presidential transition period. The Logan Act has never been used in a criminal prosecution and has a questionable constitutional status; it was enacted in 1799 in an era before telephones, and was intended to prevent individuals from falsely claiming to represent the United States government abroad.

In late 2017, Flynn pleaded guilty to making false statements to Strzok and another agent during that White House interview. But he has yet to be sentenced, as his team has sought to withdraw his guilty plea, citing "egregious" FBI misconduct.

Thursday's document release shows that on January 4, 2017, weeks before the fateful January 24, 2017 White House interview, the FBI’s Washington Field Office issued a “Closing Communication" indicating that the bureau was terminating "CROSSFIRE RAZOR" -- the newly disclosed codename for the investigation of Flynn.

According to the January 4 memo, the goal of CROSSFIRE RAZOR was to determine whether Flynn “was directed and controlled by” or “coordinated activities with the Russian Federation in a manner which is a threat to the national security” of the United States or a violation of federal foreign agent laws.

In pursuit of information on Flynn, the "Crossfire Hurricane" team investigating the Trump team “conducted a check of logical databases for any derogatory information” on Flynn. The January 4 FBI report states that “no derogatory information was identified in FBI holdings.” Read more at FOX News