President Trump offered his first comments Saturday on Michael Flynn since his former national security adviser pleaded guilty to lying to the FBI in January about his contacts with the Russian ambassador.

Asked by reporters if he was worried about what Flynn might tell special counsel Robert Mueller, with whom he has agreed to cooperate, Trump said: "No, I am not."

The president, who is on his way from Washington, D.C., to New York City for the day, also insisted that "there has been absolutely no collusion" between his campaign and Russia during the 2016 campaign, something which Mueller's team is investigating.

Flynn was charged Friday on one count of “willfully and knowingly” making “false, fictitious and fraudulent statements” to the FBI about communications exchanged with then-Russian Ambassador Sergey Kislyak shortly after Trump took office.

Flynn could play a pivotal roll in Mueller's probe as former FBI Director James Comey has testified that Trump asked him to drop his investigation into Flynn. Mueller's probe is reportedly also looking into whether Trump waded into obstruction of justice by firing Comey.