Former Rep. Pete Sessions is cooperating with a New York investigation about his dealings with Rudy Giuliani and his associates and who allegedly tried to help launch a corruption probe of Joe Biden in Ukraine, his spokesman said Tuesday.

"Mr. Sessions is cooperating with the U.S. Attorney from the Southern District of New York and will be providing documents to their office related to this matter over the next couple of weeks as requested,” said Sessions spokesman Matt Mackowiak.

The Wall Street Journal first reported the subpoena. In addition to Giuliani’s business dealings with Ukraine and his involvement in efforts to oust the U.S. ambassador in Kyiv, the subpoena seeks information any interactions between Sessions, Giuliani and four of Giuliani’s associates who were indicted last week on campaign-finance and conspiracy accounts, the Journal reported.

The Journal said Giuliani is the primary focus of the subpoena and there is no indication that Sessions is under investigation. Sessions is a longtime friend of Giuliani whose interactions with two of Giuliani’s Soviet-born associates, Lev Parnas and Igor Fruman, were detailed in the indictment unsealed last week.

Sessions denied any wrongdoing last week after the arrest of Parnas and Fruman, who were two of his campaign donors. Sessions has since said he will give campaign donations to charities in the 17th Congressional District, where he is trying to launch a comeback in an open seat being vacated by GOP Rep. Bill Flores.

The indictment didn’t mention Sessions by name, referring to him as “Congressman-1.”

Sessions has acknowledged that he met with the businessmen, and that he wrote in May 2018 to Secretary of State Mike Pompeo to ask for that ambassador’s removal. But before last week, he had not explained who motivated him to seek the ouster of Marie Yovanovitch, a career diplomat, from her post in Kyiv.

Sessions asserted that he met with Parnas and Fruman “about the strategic need for Ukraine to become energy independent," adding that “there was no request in that meeting" and that he "took no action.” He later had “a couple additional meetings” with them. “Again,” he said, "at no time did I take any official action after these meetings.”

He said that he urged Pompeo to remove Yovanovitch because “several congressional colleagues reported to me that the current U.S. Ambassador to Ukraine was disparaging President Trump to others as part of those official duties.

“My entire motivation for sending the letter was that I believe that political appointees should not be disparaging the President, especially while serving overseas,” he said.

Staff Writer Tom Benning contributed to this report.