Darby Marmillion, a 19-year-old woman from Baton Rouge, was pulled into a fatal chain of events on the night of April 2, 2026, when what authorities say was supposed to be a meeting to sell vape pens ended in violence. Investigators said she had been communicating online with a 16-year-old and arranged to meet him at the City Heights Apartments on Coursey Boulevard.
According to reports, the teenager got into her vehicle during the meeting, and the encounter quickly turned from a routine exchange into a robbery. Deputies said he pulled a gun, took the vape pens, and shot her before fleeing, leaving her gravely wounded inside the car.
Marmillion was found suffering from a gunshot wound and taken to the hospital in critical condition. She died the next day, on April 3, 2026. Her death turned what had already been a violent robbery case into a homicide investigation, and the story that followed was one of a young life cut short in a moment that seems to have unfolded with terrifying speed. Publicly available obituary information identified her as a Baton Rouge resident and confirmed her age, while later reporting filled in the final hours that led to her death.
An arrest came quickly. Authorities said the 16-year-old suspect was taken into custody on April 6, 2026. Because he is a juvenile, his name and mugshot were not publicly released. Reports said he was booked on charges of first-degree murder, armed robbery, illegal possession of a handgun by a juvenile, and obstruction of justice. Law enforcement has described him as the only publicly identified suspect in the case so far, and no additional arrests were publicly reported in the available coverage I found.
What makes the case especially haunting is how ordinary the meeting appears to have seemed before it turned deadly. By the account investigators laid out, Marmillion arrived expecting a sale, not a robbery and not the gunfire that followed. The scene on Coursey Boulevard became the last place she was seen alive, and in the days afterward the case became another stark example of how quickly in-person meetups arranged online can spiral into irreversible violence. As of the latest publicly available reporting I found, the juvenile suspect had been arrested and charged, but no trial outcome or conviction had yet been publicly reported.
