The Energy Department on Monday agreed to begin releasing a cache of Ukraine-related records, including former Energy Secretary Rick Perry Rick PerryOVERNIGHT ENERGY: Democrats push resolution to battle climate change, sluggish economy and racial injustice | Senators reach compromise on greenhouse gas amendment stalling energy bill | Trump courts Florida voters with offshore drilling moratorium OVERNIGHT ENERGY: Trump signs major conservation bill into law | Senate votes to confirm Energy's No. 2 official | Trump Jr. expresses opposition to Pebble Mine project Senate votes to confirm Energy's No. 2 official MORE’s communications with high-level Ukrainian officials, according to a joint status report filed in a Washington, D.C., court.

The agreement came in response to a Freedom of Information Act lawsuit filed by American Oversight, an ethics watchdog group. The group in October sued the department in an attempt to gain access to documents relating to Perry’s communications with key Trump administration and Ukrainian officials. It also sought records relating to the department’s contacts with President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE’s attorney Rudy Giuliani Rudy GiulianiGrand jury adds additional counts against Giuliani associates Lev Parnas and and Igor Fruman Juan Williams: Breaking down the debates Giuliani criticizes NYC leadership: 'They're killing this city' MORE.

The DOE agreed to start releasing documents relating to Perry’s communications with his former chief of staff Brian McCormack by Jan. 28. The first set of documents will also include records relating to the presidential delegation Perry led to Ukrainian President Volodymyr Zelensky's inauguration last May.

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Another package of documents, focused in part on Perry's and McCormack's communications with Giuliani, are scheduled to be released on Feb. 4. A third cache of Ukraine-related documents will be released by March 16.

“American Oversight followed proper legal procedures that the Department will honor," DOE press secretary Shaylyn Hynes said in statement to The Hill.

Perry and Giuliani have become key figures in the House impeachment inquiry into Trump's dealings with Ukraine. The inquiry primarily focused on allegations that Trump pressured Ukraine to announce politically advantageous investigations and that he used military aid as a source of leverage.

The House in December voted to impeach Trump on charges of abuse of power and obstruction of Congress.

Perry, who stepped down as Energy secretary late last year, faced a House subpoena in October after media reports raised questions about his involvement in Trump's dealings with Ukraine.

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CNN reported in October that Trump directed Perry and multiple State Department officials to talk with Giuliani about matters pertaining to Ukraine. Trump also told House Republicans during a conference call that he made the infamous July 25 phone call with Zelensky after a request from Perry, according to Axios.

Perry refused to comply with a House subpoena before departing the administration. Department of Energy press secretary Shaylyn Hynes wrote in a statement to The Hill in November that Perry would "not partake in a secret star chamber inquisition."

She argued on Monday that the department did not respond to a House subpoena because lawmakers "subpoenaed the Department for documents without proper authorization, ignoring its own rules."

UPDATED 10:51 p.m.