Sen. Al Franken (D-Minn.) said on Thursday that he is resigning his Senate seat over allegations of groping and sexual misconduct.

Franken said some of the allegations against him are “simply not true” and that others he remembers differently.

“I am proud that in my time in the Senate I have used my power to be a champion for women,” Franken said.

Nevertheless, he said he would be resigning in the coming weeks as a member of the Senate.