President Joe Biden told a group of supporters on Saturday that Donald Trump is "clearly unhinged" since he "snapped" following his defeat in 2020.
He reportedly made the comment during a private fundraiser outside of Seattle.
"When he lost in 2020, something snapped in him," Biden said ,according to reporters in the room.
The fundraiser was held at the home of former Microsoft executive Jon Shirley, CNN reported.
It was one of several fundraisers the president held during a brief swing to the West Coast.
Biden raised millions of dollars in Silicon Valley on Friday, the Los Angeles Times.reported.
While Biden was out West, Donald Trump held a campaign rally in Wildwood, N.J., where thousands turned out in a Republican area of a state that generally votes Democratic in national elections.
Several polls show that Trump is leading in the election by a narrow margin, although some show the race tightening.
Trump has had to sharply curtail his campaign schedule to attend his Manhattan criminal trial for allegedly making hush-money payments to a former porn star to keep her quiet about a sexual relationship she claimed she had with him. Trump denies having sex with Stormy Daniels.