(CHICAGO.CBSLOCAL) — After a standoff that lasted more than 10 hours, police in Oak Lawn and the FBI say they arrested a bank robber – after getting him out of a ceiling air duct.

The division chief of the Oak Lawn Police, Michael Kaufmann, says the bank robber cut through the roof over the bank to get in – and had to go through six inches of concrete.

Kaufmann says it’s likely the robber knew something about the bank – or knew somebody who did.

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