Sen. Chris MurphyChristopher (Chris) Scott MurphyHouse passes bill to end US support for Saudi war in Yemen This week: Border deal remains elusive as shutdown looms Border talks stall as another shutdown looms MORE (D-Conn.) is calling for President Trump to testify before congressional investigators about his interactions with fired FBI Director James Comey, after the former top cop testified before a Senate panel about his conversations with the president.

"What’s most important is that investigators in the Senate and at the Department of Justice get all the facts and find the truth," Murphy said in a statement.

"If the White House’s account differs from what we heard today, the American people deserve to hear the president’s side of the story in a similar forum — under oath and open to the press," he added.

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In a highly anticipated testimony Thursday, Comey told members of the Senate Intelligence Committee that Trump had asked him in private conversations for a pledge of loyalty and once urged him to shut down his agency's investigation into former national security adviser Michael Flynn.

Trump abruptly fired Comey last month, initially arguing that his handling of the FBI's investigation into Hillary ClintonHillary Diane Rodham ClintonOvernight Defense: Trump declares border emergency | .6B in military construction funds to be used for wall | Trump believes Obama would have started war with North Korea | Pentagon delivers aid for Venezuelan migrants Sarah Sanders says she was interviewed by Mueller's office Trump: I believe Obama would have gone to war with North Korea MORE's private email use damaged the bureau's credibility and destroyed confidence in Comey's ability to do his job.

But in an interview with NBC's Lester Holt, Trump acknowledged that he had thought of the FBI's Russia investigation in his decision to fire Comey. Subsequent news reported also revealed that the president had told visiting Russian officials a day after he ousted Comey that doing so relieved him of "great pressure" because of the probe.

Trump has also publicly denied ever asking Comey to pledge his loyalty, issuing a flat rejection of that account at a news conference last month. Comey said on Thursday that that assertion was not true.

Still, whether Trump should testify before a congressional panel is a question that has rarely been raised, and it is not common for a sitting president to do so.