Republican Sen. Jeff Flake, R-Ariz., said he called for an FBI investigation into allegations of sexual assault against Supreme Court nominee Brett Kavanaugh Friday because he wanted to “lend more legitimacy to this process,” adding he wouldn’t feel comfortable voting on the floor as things stand right now.

But what that investigation would look like remains unclear to him and the Democrats who backed his play in the Senate Judiciary Committee. Flake could still vote “yes” on Kavanaugh’s nomination depending on what emerges from the investigation.