In an interview with Al Jazeera, Bruce Fein, a former top U.S. prosecutor, described the reports as significant amid questions over the culpability of Trump's business in the payoff scheme, which Cohen had pleaded guilty to.
How is Trump's policy of "Be loyal to be, and I will treat you like dirt" working?
Cohen on Tuesday pleaded guilty to eight counts, including campaign finance violations connected to those payments.
The longtime chief financial officer of the Trump Organization, Allen Weisselberg, was given immunity by federal prosecutors in NY during the course of the Michael Cohen Investigation, according to a person with knowledge of the matter.
Mr Weisselberg was one of those called to give evidence before a federal grand jury for the Cohen investigation earlier this year, the Wall Street Journal reports.
Cohen knows where all the bodies are buried, Weisselberg knows where all the money is hidden, and Pecker has all the stories and tapes documenting Trump's numerous affairs locked in his safe.
It is not clear whether Weisselberg told government prosecutors that the president was aware of the payments.
ON: Ryanair changes cabin bag policy AGAIN
Instead, they will be asked to pay an extra £8 at the time of booking to cover the cost of storing the small suitcase in the hold. According to their website, non-priority customers who want to bring a second larger bag can buy the "10kg Check-in Bag".
Vanity Fair first reported the immunity deal.
Prosecutors said that Mr Cohen had been reimbursed for his role in the payments through a $35,000 monthly retainer arranged by executives at the Trump Organisation.
Cohen pleaded guilty to eight felony counts after striking a deal with prosecutors in NY.
Rudy Giuliani, a lawyer for the president, has said the payment to McDougal and a $130,000 payment to adult-film performer Stormy Daniels were a personal matter and were not subject to campaign finance law.
Under a reorganization plan announced before Trump's January 2017 inauguration, the business was placed into a trust controlled by Weisselberg and the president's two adult sons, Donald Trump Jr. and Eric Trump.
Trump has repeatedly denied there was collusion and has labelled the Mueller probe a "witch hunt".