Two associates of 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 personal attorney 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 had lunch with Giuliani at the Trump International Hotel in Washington, D.C., hours before they were arrested, The Wall Street Journal reported, citing a source who saw the group together.

The two Soviet-born businessmen, Led Parnas and Igor Fruman, were arrested Wednesday night at Washington Dulles International Airport on campaign finance violation charges. Federal authorities allege they violated the law to funnel money to numerous Republican committees, including a $325,000 contribution in May 2018 to a pro-Trump super PAC called America First Action.

Prosecutors say the two were attempting to leave the country with one-way international tickets when they were arrested.

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House committees subpoenaed the pair, who the committee chairmen say aided Giuliani’s efforts to investigate 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, on Thursday for documents related to their work with Ukrainian officials and political contributions in the U.S.

The two reportedly introduced Giuliani to several Ukrainian officials to discuss the dismissal of a prosecutor, which Trump has claimed without evidence was the result of Biden sabotaging an investigation into a company his son, Hunter, worked for.

Trump’s attempts to encourage Ukraine’s president to investigate Biden led the House to open a formal impeachment inquiry last month.