(CNN) Former Attorney General Loretta Lynch on Sunday defended her handling of the Clinton email investigation, saying in a statement that she "never hesitated to make the hard decisions." Comey writes in the book that he found evidence which he felt could cast "serious doubt" on Lynch's independence. "Had it become public, the unverified material would undoubtedly have been used by political opponents to cast serious doubt on the attorney general's independence in connection with the Clinton investigation," Comey writes. He calls the material a "development still unknown to the American public to this day." Congressional investigators have raised questions about about any conversations Lynch had with Clinton staffer Amanda Renteria or former Democratic National Committee Chairwoman Rep. Debbie Wasserman Schultz about the email investigation.

Source: CNN April 16, 2018 00:22 UTC