(CNN) Two weeks before taking office, Ukrainian President Volodymyr Zelensky and his team discussed the pressure they were already feeling from the Trump administration and President Donald Trump's personal attorney Rudy Giuliani to publicly launch investigations that would benefit the US leader, according to a source familiar with discussions at the meeting.

The source told CNN that Zelensky and his team specifically mentioned the pressure they were feeling to open "corruption" investigations into Burisma, the Ukrainian natural gas company on whose board former Vice President Joe Biden's son sat.

The source said the meeting was originally scheduled to discuss energy issues but the meeting evolved into a discussion on how to handle the pressure from Trump's orbit. Among those present in the May 7 meeting were Zelensky advisers Andriy Yermak and Andriy Bogdan. Also involved were an executive for the Ukrainian state-owned natural gas company and American Amos Hochstein, a former diplomat and energy expert.

The meeting happened about two weeks after Zelensky and Trump spoke for the first time. A White House readout of that call said the two leaders discussed working together to "root out corruption." Trump has said he did not pressure Zelensky to investigate the Bidens.

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