Bullets that killed 2 bystanders at Seattle food festival not from arrested teen shooter's gun

Preliminary testing showed bullets that killed two bystanders at the Bite of Seattle festival did not come from the gun of the arrested 15-year-old suspect.

The teen was seen firing an untraceable ghost gun into a crowd and faces charges of first-degree assault and unlawful possession of a handgun.

The shooting left three dead, including a 19-year-old suspect, and at least four injured, including a toddler.

Police believe the shooting was gang-related and are searching for other suspects; shell casings suggest four weapons were fired.

Only two of three recovered guns had been fired, indicating two weapons involved were not found at the scene.