This Thursday, May 25, 2017, photo provided by the Maricopa County Sheriff's Office shows Matthew Sterling in Phoenix, Ariz. Sterling was taken into custody Thursday after a brief struggle with police at the Phoenix Convention Center. Police are adding extra security at the Phoenix Comicon following the arrest of Sterling, who was armed with guns and ammunition and who allegedly posted online threats against police officers. (Maricopa County Sheriff's Office via AP)
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