Several diners at the Olympia Restaurant have complained of stolen coats in the last fews days. A

Question:

Several diners at the Olympia Restaurant have complained of stolen coats in the last fews days. A regular customer known to the manager entered the store with a coat that resembled the description of on of the stolen coats. The manager detained the customer pending an investigation. Was the manager's action in detaining the customer legal? Why or why not?