Seventeen-year-old David De Sheon Johnson Jr. died of gunshot wounds on April 9, 2011, at Crozer-Chester Medical Center after a shooting at a teenager’s birthday party held at the Minaret Temple in Chester, Pennsylvania. The violence that night killed Johnson and another man, Robel Laboy, and wounded seven other people as the celebration turned chaotic.

A 16-year-old, Kenai Avery, was stopped by a security guard while leaving the party with a handgun. Avery gave conflicting accounts to Chester police, first saying he found the gun on the floor after shots were fired and later saying a security guard put the firearm in his hand. Investigators found three photos of a similar weapon on his cell phone, and a second fired gun was recovered inside the hall near where Johnson and Laboy were shot.

Avery was charged as an adult with two counts of murder in connection with the deadly shootings. Is there anyone who attended that party or who remembers seeing either firearm inside the hall that night willing to share what they saw?