Darby Marmillion was 19 and from Baton Rouge when a meeting to sell vape pens on the night of April 2, 2026, turned deadly. Investigators say she had arranged to meet a 16-year-old at the City Heights Apartments on Coursey Boulevard after communicating online. The teenager reportedly got into her vehicle, pulled a gun, took the vape pens and shot her. Marmillion was found with a gunshot wound, taken to hospital in critical condition, and died on April 3, 2026.

Authorities arrested the 16-year-old on April 6, 2026. Because he is a juvenile, his name and photo were not released. Public reports list charges of first-degree murder, armed robbery, illegal possession of a handgun by a juvenile and obstruction of justice; he is described as the only publicly identified suspect. No trial outcome or conviction had been publicly reported as of the latest reporting.

The meeting on Coursey Boulevard was meant to be a routine sale and became the last place Marmillion was seen alive. Did anyone in Baton Rouge know her or see her that night who could add details about the meeting or the suspect?