Retired U.S. Supreme Court Justice John Paul Stevens said on Thursday that Supreme Court nominee Brett Kavanaugh does not belong on the high court because of "potential bias" he showed in his recent Senate confirmation hearing.

Speaking to an audience of retirees in Boca Raton, Florida, Stevens, 98, said he started out believing that Kavanaugh deserved to be confirmed, "but his performance during the hearings caused me to change my mind."

Stevens cited commentary by Harvard University law professor Laurence Tribe and others suggesting Kavanaugh had raised doubts about his political impartiality when he asserted that sexual misconduct accusations he faced stemmed from an "orchestrated political hit" funded by left-wing groups seeking "revenge on behalf of the Clintons."