The areas included shopping malls and villages that are crowded with people, especially during holidays.
Deputy Chief of Public Security Brigadier Tariq Bin Daina in a statement on Wednesday rejected the credibility of the message being circulated in Bahrain mainly among Americans.
He said that operations rooms at the Public Security Department had received calls about the SMS based on a US embassy alert, warning American nationals to exercise caution and refrain from visiting certain areas in Bahrain.
The official said that the US embassy had also denied issuing any such message.
