Attorney General Jeff Sessions has postponed testimony this week before two congressional committees about Department of Justice funding amid probes into Russian interference in the 2016 election, Politico reported.

DOJ spokeswoman Sarah Isgur Flores said testimony planned for Wednesday in the House and Thursday in the Senate was canceled because of a scheduling conflict.

Trump's budget blueprint will be released Tuesday morning.

Sessions is now expected to give his Senate testimony June 13, Politico reported.

Other Cabinet officials are traveling to Capitol Hill this week to talk about President Donald Trump's budget proposal, but with Sessions, Democrats are likely to raise questions about the controversy swirling around the Trump White House and the Russia investigation, as well as Trump's firing of former FBI Director James Comey, Politico reported.

The outlet reported Sens. Jeanne Shaheen, D-N.H., and Patrick Leahy, D-Vt., have written letters to the Department of Justice axing for more information on reported requests from Comey for more resources for the Russia probe shortly before he was dismissed. Deputy Attorney General Rod Rosenstein has told lawmakers he wasn't aware of any such requests, Politico reported.