READ: Trump officials' texts discussing Ukraine

The Democratic chairmen of three House panels on Thursday night released text message exchanges between several Trump administration officials regarding the administration's dealings with Ukraine.

House Democrats argued in a letter that the messages underscore the administration's efforts to get Ukraine to pursue an investigation into President TrumpDonald John TrumpRepublicans aim to avoid war with White House over impeachment strategy New York Times editorial board calls for Trump's impeachment Trump rips Michigan Rep. Dingell after Fox News appearance: 'Really pathetic!' MORE's political rivals, an issue at the heart of the chamber's impeachment inquiry.

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The letter contains more than a dozen text message exchanges involving Rudy GiulianiRudy GiulianiGraham invites Giuliani to testify about recent Ukraine trip Judge orders State Dept. to search for and provide more Ukraine docs DOJ releases memos backing Trump immunity claims ahead of impeachment vote MORE, Trump's personal attorney; Kurt VolkerKurt VolkerPush to investigate Bidens sets up potential for Senate turf war Senate confirms Brouillette to replace Perry as Energy secretary How Democrats' missing witnesses could fill in the Ukraine story MORE, Trump's former envoy to Ukraine; William Taylor, a top official at the U.S. Embassy in Ukraine; Gordon Sondland, the U.S. ambassador to the European Union; and Andriy Yermak, a Ukrainian official.

“These text messages reflect serious concerns raised by a State Department official about the detrimental effects of withholding critical military assistance from Ukraine, and the importance of setting up a meeting between President Trump and the Ukrainian President without further delay,” the chairmen wrote.  

Read the full release here: