On the afternoon of June 20, 2016, 35-year-old Marlo LoDown Williams was found shot to death inside his vehicle in the IHOP parking lot on Sycamore View in Memphis, Tennessee. The shooting, discovered around 4:30 p.m., was reported as the city’s 107th homicide that year.

Investigators say the killing grew out of a drug deal that turned violent. The primary suspect was identified as 16-year-old Sebastian Vaughn, who allegedly argued with Williams during the transaction and shot him with a sawed-off shotgun while Williams sat in his car. Williams was also robbed after the shooting, and Vaughn reportedly took a photo of Williams after the killing and shared it on Snapchat.

Police arrested Vaughn and moved to try him in adult court. Others were implicated for their roles in concealing evidence and helping Vaughn avoid capture: Lee-Ann Combs was charged with tampering with or fabricating evidence after authorities say she drove her daughter to the I-40 bridge to discard a backpack containing the murder weapon, and Summer Rhoden was indicted for allegedly hiding Vaughn despite knowing he was wanted in the case.

Did anyone see activity in the IHOP parking lot that afternoon or know more about the people involved?