In the fall of 2013 a house party on Phoenix’s southwest side near Southern and 53rd avenues ended in gunfire that killed 19-year-old Nora Osman. On the night of November 9, occupants of a red Cadillac reportedly opened fire as the party was winding down. Osman was standing on a corner when she was struck; three other people — an 18-year-old woman, a 21-year-old man and a 22-year-old man — were also wounded and expected to survive.

Responders found about 30 shell casings at the scene, and investigators reported that at least four different firearms had been fired and that someone from where Osman and the other victims stood had returned fire. Osman was taken to a hospital and pronounced dead; friends and family said she was a student at Phoenix College.

The shooting was described as gang-related. Arrests followed: Marquis Young, 18, was arrested January 14 and booked on multiple charges including first-degree murder and held on a $1 million bond. Authorities later charged D'Drique Price, Theodore Montgomery (both 18), a 15-year-old boy, and the alleged driver Jacorion Tyrell White, known as Coco, in connection with the killing.

Did anyone at that party or in the neighborhood know Nora or notice the red Cadillac that night?