Seattle police say 15-year-old arrested in connection with festival shooting had a ghost gun

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The 15-year-old arrested after a shootout at food festival near Seattle’s Space Needle over the weekend was armed with a ghost gun with an extended magazine. Police Chief Shon Barnes told a news conference Tuesday that the weapon was a 9 mm gun from Polymer80 — a now-defunct company that was once a leading manufacturer of ghost gun parts. Investigators also recovered two other weapons and 14 shell casings that had been fired by weapons of two different calibers, he said.