On the night of June 3, 2015, a lone gunman approached a parked SUV on Davidson Street in Wyandanch, New York, and opened fire. Twelve gunshots were reported. Three people were killed: 23-year-old Stephanie Almedina Rivera of Bay Shore, 25-year-old William Madrey of Wyandanch, and 23-year-old Ciara Smith of Deer Park. A fourth woman riding in the SUV was wounded and survived.

Family described Stephanie as a sweet, family-oriented person and the best aunt, and her cousin said she was trying to get her life together and had no reason to be involved in violence. Investigators explored a possible gang-related motive after learning William Madrey had admitted past membership in the Bloods, though his family disputed his current involvement. A culture of silence in the neighborhood was cited as hampering the inquiry. Three people were later arrested on kidnapping and assault charges in a separate incident involving a man they believed was the shooter; one person publicly named in that matter was Justin Rivera, but authorities did not confirm he was a homicide suspect.

No arrests have been announced in the triple homicide and a reward was offered for information leading to an arrest. Does anyone in Wyandanch or Bay Shore remember that night or have information about the people in the SUV?