Senate Majority Leader Mitch McConnell (R-Ky.) is calling on the Senate Ethics Committee to review allegations that Sen. Al Franken (D-Minn.) kissed and groped a woman without her consent in 2006.

"As with all credible allegations of sexual harassment or assault, I believe the Ethics Committee should review the matter. I hope the Democratic Leader will join me on this. Regardless of party, harassment and assault are completely unacceptable - in the workplace or anywhere else," McConnell said in a statement.

Leeann Tweeden, a TV host and sports broadcaster, accused Franken of groping her, without her consent, while she was asleep. She provided a photo as evidence.

The incident happened in December 2006, she said, when she and Franken, then a comedian, were on a USO Tour to "entertain our troops."

Franken apologized on Thursday, saying, "I certainly don't remember the rehearsal for the skit in the same way, but I send my sincerest apologies to Leeann."

He added that "as to the photo, it was clearly intended to be funny but wasn't. I shouldn't have done it."

McConnell's push for the Ethics Committee to review the allegation against Franken comes after he warned Alabama Senate candidate Roy Moore, a Republican, that he would face an ethics probe if he wins next month's special election over allegations of sexual misconduct toward teenage girls.