Roberto Perez, 38, was found inside a vehicle in west Phoenix with fatal gunshot wounds after police responded to a shots-fired call on July 7, 2017. He was pronounced dead at the scene.

Investigators say the shooting grew out of a drug deal that turned violent and that the apparent motive was robbery. In the days after the killing, Phoenix police arrested three people in connection with the case: Anthony Elias Thomas, then 26; Luis Carlos Urias, then 35; and Crystal Amy Allison, then 33. All three were charged with first-degree murder, armed robbery, and possession of dangerous drugs for sale. A judge set bond at $1 million for each.

What information might help fill gaps in the timeline of that night or identify other witnesses who were nearby?