President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE tore into Attorney General Jeff Sessions Jefferson (Jeff) Beauregard SessionsGOP set to release controversial Biden report Trump's policies on refugees are as simple as ABCs Ocasio-Cortez, Velázquez call for convention to decide Puerto Rico status MORE in a tweet early Tuesday, blaming him for the ongoing federal probe into alleged ties between the Trump campaign and Russia.

"The Russian Witch Hunt Hoax continues, all because Jeff Sessions didn’t tell me he was going to recuse himself...I would have quickly picked someone else," Trump said.

"So much time and money wasted, so many lives ruined...and Sessions knew better than most that there was No Collusion!" he added.

The Russian Witch Hunt Hoax continues, all because Jeff Sessions didn’t tell me he was going to recuse himself...I would have quickly picked someone else. So much time and money wasted, so many lives ruined...and Sessions knew better than most that there was No Collusion! — Donald J. Trump (@realDonaldTrump) June 5, 2018

Sessions, who was the first sitting U.S. senator to endorse Trump during the campaign, recused himself from the Russia probe last year, citing his contacts with Moscow’s U.S. envoy during the 2016 campaign.

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Trump has since lashed out at Sessions for the move, viewing it as an act of betrayal.

“If he would have recused himself before the job, I would have said, ‘Thanks, Jeff, but I’m not going to take you,’” Trump said July 2017. “It’s extremely unfair — and that’s a mild word — to the president.”

The president has also blasted Sessions as "weak" for not following through on Trump's call to investigate into former Democratic presidential nominee Hillary Clinton Hillary Diane Rodham ClintonDemocratic groups using Bloomberg money to launch M in Spanish language ads in Florida The Hill's Campaign Report: Presidential polls tighten weeks out from Election Day More than 50 Latino faith leaders endorse Biden MORE.

The president revealed last week that he regrets his decision to pick Sessions as attorney general.