New York (CNN) President Donald Trump said Tuesday he will release the "unredacted transcript" of his phone call with Ukrainian President Volodymyr Zelensky -- a call which has been scrutinized in the wake of a whistleblower report which indicates that Trump pressured Zelensky to investigate former Vice President Joe Biden's son, Hunter, according to a person familiar with the situation.

There is no evidence of wrongdoing by either Joe or Hunter Biden.

"I am currently at the United Nations representing our Country, but have authorized the release tomorrow of the complete, fully declassified and unredacted transcript of my phone conversation with President Zelensky of Ukraine," Trump tweeted while attending the United Nations General Assembly in New York.

Trump's pledge comes amid growing calls for impeachment. House Speaker Nancy Pelosi announced a formal impeachment inquiry later Tuesday.

Trump admitted Tuesday that he delayed aid to Ukraine ahead of a call to Zelensky, when he pushed the leader to look into potential rival Joe Biden and his son's work in Ukraine, giving the excuse that he was waiting for European nations to contribute their fair share of aid and claiming there was "never any quid pro quo."

Read More