The Justice Department has stated there is no evidence to back up the suggestion that former President Barack Obama ordered Trump Tower to be wiretapped prior to President Donald Trump's election victory.
The information emerged from a Freedom of Information request by American Oversight, which compelled the Justice Department to release material on the issue, CBS News reported.
The document referred to Trump's tweets on March 4, when the allegation was first made.
"Both [the Federal Bureau of Investigation] and [National Security Division] confirm that they have no records related to wiretaps as described by the March 4, 2017 tweets," the document stated, according to CBS.
In late March, former FBI Director James Comey testified to Congress that no evidence for Trump's allegation existed.
"I have no information that supports those tweets and we have looked carefully within the FBI," Comey said at the time.
Austin Evers, executive director of American Oversight, argued that the confirmation from the Justice Department undermines Trump's credibility.
"As the president and his legal team continue their smear campaign against Mr. Comey, Special Counsel [Robert] Mueller and others investigating him, this filing confirms that even Trump's own Department of Justice does not believe he has credibility on a key element of the Russia investigation," Evers said.
He added that the release would impact the investigation into alleged Russian interference into the 2016 election.
"With Special Counsel Mueller's team closing in -- and reportedly investigating attempts by Mr. Trump to mislead the public on Russia -- this filing serves as further proof that the president's words simply cannot be trusted," added Evers.
Trump's relations with Obama have been strained since the former businessman promoted a discredited allegation that Obama was not eligible to be president because he was born outside of the United States.
Trump then accused Obama of spying on him in the March 4 tweet.
"Terrible! Just found out that Obama had my 'wires tapped' in Trump Tower just before the victory. Nothing found. This is McCarthyism," wrote Trump.
News that no evidence exists to back up this allegation came two days before CNN released a letter sent by Obama to his successor in which the outgoing president gave Trump some advice.
Obama told Trump to "build more ladders of success for every child and family," and maintain international order.
"Regardless of the push and pull of daily politics, it's up to us to leave those instruments of our democracy at least as strong as we found them," Obama wrote to Trump, according to The Hill.