On the morning of June 21, 2015, 21-year-old Donlisha Patterson was fatally shot while riding as a backseat passenger in a silver Honda Accord in Baton Rouge, Louisiana. The car had just left a party on East Upland Avenue after attendees decided to leave because many at the gathering were high school students. Multiple rounds were fired; Patterson was struck once in the head and later died at Our Lady of the Lake Hospital.

Investigators linked the shooting to Elton D. Gaines, III, who had been working as a security guard at the party. A party witness said a black car drove past the house, a shot was heard, and she believed Gaines fired at the vehicle. Gaines surrendered himself and his firearm to homicide detectives two days later; ballistic testing matched seven shell casings from the scene to his gun. He was indicted on second-degree murder, convicted by a jury of manslaughter, and sentenced to twenty years at hard labor.

If anyone attended that party or has information about what happened in the lead-up to the shooting, please share what is known.