Michael Cohen told lawmakers that he's aware of additional illegal acts President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE committed that have not been discussed at Wednesday's hearing, but that he could not elaborate because they relate to a Southern District of New York investigation.

Cohen, Trump's former personal attorney who is set for a three-year jail term on charges related to financial crimes, estimated that he last spoke with Trump or someone acting on his behalf last summer, though he could not recall a specific date.

"I would suspect it was within two months post-the raid,” he said, referring to the April 2018 FBI raid of his home, hotel room and office.

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Asked what they discussed, Cohen said, "Unfortunately this topic is actually something that’s being investigated right now by the Southern District of New York, and I’ve been asked by them not to discuss and not to talk about these issues."

Cohen is testifying before the House Oversight and Reform Committee. He'll appear on Thursday behind closed doors before the House Intelligence Committee.

Republicans and the White House have ripped into Cohen's credibility during the hearing, arguing what he says cannot be trusted. Democrats and Cohen have countered that he has no reason to lie.

Cohen has admitted to previously lying to Congress.

On Wednesday, Rep. Raja Krishnamoorthi (D-Ill.) asked if there was "any other wrongdoing or illegal act" that Cohen is aware of regarding Trump that had not yet been discussed.

"Yes and that’s part of the investigation being looked at by the Southern District of New York," Cohen said.

Cohen pleaded guilty last year in the Southern District to charges of bank fraud, tax fraud and campaign finance law violations.