Senior Democrats on Sunday accused embattled Virginia Gov. Ralph Northam of being dishonest and urged him to resign after he backtracked from an earlier admission that he appeared in racist garb in a yearbook photo.

Northam, a Democrat trying to resist mounting pressure from his party to step down, on Saturday walked back his admission that he was one of two people shown in the photo from his 1984 medical school yearbook, one person in blackface standing next to another in a Ku Klux Klan costume.

Northam, who took office a year ago, had admitted on Friday he was in the photo from the 1980s.