Former national security adviser Michael Flynn's consulting firm produced an unfinished documentary last fall to boost Turkey’s image following a failed military coup, The Wall Street Journal reported Tuesday.

The film was produced by the Flynn Intel Group as part of the lobbying efforts of a Turkish businessman. While unfinished and not yet made public, the film reportedly involves a scene with Flynn's business partner, BiJan Kian, and the head of Turkish military intelligence meeting in a hotel room.

The work done on the documentary by Flynn's firm reportedly took place while Flynn was campaigning on behalf of then-Republican presidential candidate Donald Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE.

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The sponsor of the film paid Flynn’s consulting firm over half a million dollars for its lobbying work, according to The Wall Street Journal.

The film and his contract with the Turkish client will likely be part of the ongoing investigation into Flynn’s business dealings after the former intelligence officer failed to disclose that his firm represented Turkish efforts to the federal government until March of this year.

Flynn is under congressional, federal and military investigation for allegations that he illegally withheld his financial ties to the Kremlin and Turkey, which stood the risk of influencing him while he served in the White House. He resigned from his post as national security adviser earlier this year after it became known that he mislead Vice President Pence about his discussions with a top Russian diplomat.

A Russian state news outlet also paid Flynn in 2015 to attend a gala with Russian president Vladimir Putin in Moscow and give a speech about U.S. foreign policy.

Last week, Flynn declined to cooperate with congressional subpoenas, citing a “public frenzy” surrounding the Russia investigations and invoking his Fifth Amendment right against self-incrimination.

He has, however, agreed to provide documents from his two businesses, a person familiar with the matter told the Journal.