The Trump campaign said the whistleblower complaint is "an even bigger hoax than the Russia delusion," according to a statement released Thursday.

The response comes after the release of the whistleblower complaint on Thursday, which alleges that 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 sought to enlist Ukraine's help in the 2020 election by mounting a corruption investigation against 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.

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"This whistleblower complaint is an even bigger hoax than the Russia delusion," said the Trump campaign's national press secretary, Kayleigh McEnany. "It’s built on second-hand information echoed by the biased fake news media."

McEnany said in the release that the complaint was "cobbled together by a partisan bureaucrat with 'no direct knowledge.'"

"Democrats are trying to block the inevitable re-election of President Trump because they know they can’t beat him fair and square at the ballot box," McEnany also said.

The Trump campaign blasts the whistleblower complaint as being "built on second-hand information" & claims the "account was cobbled together by a partisan bureaucrat with 'no direct knowledge,'" which is an odd line of attack when the underlying transcript supports the complaint. pic.twitter.com/w5FYdZOszO — Sarah Westwood (@sarahcwestwood) September 26, 2019

The press release followed a contentious House Intelligence Committee hearing where acting Director of National Intelligence Joseph Maguire testified about the whistleblower report.

House Democrats this week started a formal impeachment inquiry after reports of the whistleblower surfaced.