U.S. Treasury Secretary Janet Yellen said Friday the next chair of the Federal Deposit Insurance Corp. needs to be a credible outsider who is "committed to cleaning up the problem" on sexual harassment.

Yellen told Reuters in an interview on the sidelines of a G7 finance meeting that the FDIC regulator needs someone who has a credible record of past actions and strong stance on similar issues after an independent probe found widespread sexual harassment problems that prompted current chair Martin Gruenberg to resign this week.

The candidate should be someone who has not been part of the problem in any way and who "can take very decisive steps to address the cultural issues that are leading to this, really change the whole system for dealing with complaints," Yellen said.