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Detective riddle

A security guard reported a break-in at a high-end art gallery. He claimed a thief threw a heavy iron brick through the reinforced double-paned bulletproof glass window. The detective immediately arrested the guard. Why?

About this riddle

Detective riddles are tiny mysteries. Look for the detail in the story that does not fit; it is usually the clue that solves the case.

Difficulty: Easy. More like this: Detective riddles with answers or try Truth & Lie Island for a different kind of puzzle.

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