Ukraine knew by the beginning of August that the Trump administration was holding up military aid over President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE's desire for Ukraine's president to open a criminal probe into former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE (D), according to documents and interviews obtained by The New York Times.

The report in the Times said the documents and interviews indicated that Ukrainian officials were alerted to the existence of the aid freeze by the end of the first week of August.

Trump spoke on July 25 with Ukrainian President Volodymyr Zelensky about a potential investigation of Biden as well as the aid package. The White House has released a reconstructed transcript of that call, which House Democrats have used to build momentum for an impeachment inquiry against Trump.

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The communications between U.S. and Ukrainian officials uncovered by the Times do not show a direct reference to Trump's request for an investigation of Biden.

The interviews and documents do show, the Times reported, that the administration asked Ukraine to bring a senior aide to Zelensky who spoke with Trump's lawyer, Rudy Giuliani Rudy GiulianiThe Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting CIA found Putin 'probably directing' campaign against Biden: report Democrats fear Russia interference could spoil bid to retake Senate MORE, about the potential investigation, to the negotiations over the aid.

The Times report comes as Trump and his allies have argued that Ukraine only learned that the military aid had been held up in the media. Trump said this showed that there was no quid pro quo between the delivery of the aid and politically-charged investigations.

The Times report also echoes a a claim made by the anonymous whistleblower who filed a complaint with the intelligence community's inspector general about Trump's call with Zelensky.

“As of early August, I heard from U.S. officials that some Ukrainian officials were aware that U.S. aid might be in jeopardy, but I do not know how or when they learned of it,” the whistleblower complaint read.

Trump in a tweet on Wednesday quoted Rep. John Ratcliffe John Lee RatcliffeHillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Bipartisan representatives demand answers on expired surveillance programs Democrats call for declassifying election threats after briefing by Trump officials MORE (R-Texas), who insinuated on "Fox and Friends" that Ukrainian officials were not aware that aid was ever tied to an investigation of Biden, currently a front-runner for the 2020 Democratic Party presidential nomination.

"'Neither he (Taylor) or any other witness has provided testimony that the Ukrainians were aware that military aid was being withheld. You can’t have a quid pro quo with no quo.' Congressman John Ratcliffe @foxandfriends Where is the Whistleblower? The Do Nothing Dems case is DEAD!" Trump tweeted.