In the early hours of September 11, 2015, 19-year-old Mohammad Nabeel Mirzai and 20-year-old Demetrius Thomas were found dead within a block of each other near 22nd Street and Forest Avenue in Des Moines. Authorities determined both deaths were homicides and attributed the cause to gun violence.

Known as Nabeel, Mirzai had graduated from Hoover High School in May and planned to start classes at Des Moines Area Community College that fall. He was the youngest of eight siblings in a family that immigrated from Afghanistan soon after the September 11th attacks; friends described him as a sweet and happy young man.

The Des Moines Police investigated the double homicide and said the killings appeared to have stemmed from a drug deal that turned fatal. Four people were arrested in connection with the case; among those named was an 18-year-old, Luis Magallon, who turned himself in. Others charged included 20-year-old Shamair Gainey and 18-year-old Robert Baez-Alvarez, each facing first-degree robbery counts.

Did anyone who knew Nabeel or who was in the 22nd and Forest Avenue area that night see anything that could help the investigation?