Surveillance footage shows Gabby Petito and Brian Laundrie walking around a Whole Foods supermarket on August 27, 2021 - the day she was last seen alive.
Chandler, who only went by his first name, 26, said he was stopped at a red light near Moonflower when he noticed Brian Laundrie, 23, swing at Gabby Petito, 22.
The actress portraying the 22-year-old aspiring social media star - named Skyler Samuels, 28 - was seen with the famous let it be tattoo inked on her right forearm for the Lifetime film.
Two of America s top medical examiners have called into question Brian Laundrie s claims that he killed Gabby Petito out of mercy after she was suffering from hypothermia.
Brian, 23, writes that he strangled Gabby as the result of an unexpected tragedy in Grand Teton National Park in which Gabby fell into a creek and injured herself on their road trip last summer.