On the morning of the shooting, he said, Mangione rode to midtown Manhattan on an e-bike and walked near the Hilton Hotel where Thompson was supposed to appear.
The indictment expanded on earlier charges, used to obtain an arrest warrant, which accused Mangione of second-degree murder.
Mangione, 26, waited outside a midtown Manhattan hotel before shooting Thompson on Dec.4 with a 9-millimeter, 3D-printed ghost gun with a silencer, Bragg said.
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