Former White House aide George Stephanopoulos has signed on as the new co-host of Good Morning America. Stephanopoulos will replace Diane Sawyer, who is moving to take over the reins of ABC’s World News Tonight from Charles Gibson.

In an interview with ABC’s Robin Roberts, Janet Jackson says she believes Dr. Conrad Murray was responsible for her brother’s death. Murray worked as Michael Jackson’s personal physician and has admitted to giving propofol to the late pop icon, but denies responsibility for his death. Jackson died from acute propofol intoxication, according to the L. A. Coroner’s Office.