DETROIT (WWJ) – Federal agents have made in arrest in a bold heist at Greektown Casino in Detroit.

Authorities said a man dressed as a security guard simply walked up to an armored truck outside the casino, on Nov. 27, and walked away with an estimated $500,000. Police, at the time of the crime, said the robber was unarmed and no one was hurt.

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Now, three weeks later, the suspect is behind bars.

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FBI spokesperson Jill Washburn said the man was arrested at a home on Burlingame in Detroit. It’s not clear at this time if he worked for the armored car company, Loomis, or what led investigators to him.

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The man’s name and other details about the case are not being released at this time.