RELATED VIDEO: Store owner shows mercy to would-be robber
Prosecutors say undercover officers bought bongs and pipe screens at the store three times in recent weeks.
Sohail said Thursday he did not know the items were not permitted to be sold.
It's not a criminal charge and is punishable by a fine of up to $30,000.
The merchant got attention this week when it was revealed that he gave an intended robber $40 and a loaf of bread if the man agreed never to steal again.
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