Russia has repeatedly refuted all the allegations, calling them absurd and intended to deflect public opinion from pressing domestic issues.
"I would consider an effort to tamper with Director Mueller’s investigation to be unacceptable and inappropriate and would need to be dealt with very sternly and appropriately indeed," Wray told the US Senate Judiciary Committee.
Wray also promised he would alert the Judiciary Committee if anyone attempted to interfere with Mueller's investigation.
"I did not discuss those topics at all with anyone at the White House," Wray stated during his confirmation hearing.
Wray was responding to a question from Senator Dianne Feinstein, who asked if he discussed Comey or his firing with anyone in the White House, Justice Department or FBI.
He said he did discuss Comey with Deputy Attorney General Rod Rosenstein in the context of the appointment of special counsel Robert Mueller.
"Rosenstein [made] the observation to me…was that now special counsel Mueller had been appointed to deal with that issue, that in effect made for a better landscape for me to consider taking on this position," he explained.
Trump fired Comey on May 9 with the White House claiming the decision was made by Rosenstein and Attorney General Jeff Sessions. Trump later said in a televised interview that he always planned to fire Comey.