DETROIT, Mich. (CBS DETROIT) – Two people are in custody and Detroit police say they’re searching for a third after an AK-47 was found inside the Greektown Casino Hotel.

Police say they found the high-powered rifle under an ice machine, along with a bible listing different US cities.

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They’re working with the FBI and Michigan State Police due to concerns over the list.

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So far, they have not identified any motive and are still investigating.

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