i m getting hungry for dinner. thank you for watching tonight at 6:00. the news continues is streaming cbsn bay ar captioning sponsored by cbs o donnell: the breaking news the f.b.i. release the preliminary autopsy of gabby petito, calling her death a homicide, as the mystery deepens and the manhunt for her fiancé intensifies. police search a 25,000-acre nature reserve in florida, a week after brian laundrie s disappearance. tonight the new details about the couple s troubled relationship and the text that was the first sign something was wrong. crisis at the border: even though this stretch of the rio grand is shallower, it is still dangerous. o donnell: what we re learning about 20,000 more migrants potentially making they their way to the border and why they re making the journey. biden s pledge, the president addresses the united nations for the first time, committing to