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MUMBAI, Aug. 17 (Xinhua) -- Bengaluru, capital of India's southwestern state Karnataka, has been on high security alert with armed police deployed across the city on Saturday.

The alert followed an advisory note from the City Police Commissioner Bhaskar Rao to his deputies to intensify security at all iconic installations and public places in the city.

It also ensured functioning of CCTVs at key check points to watch out for vehicles moving in a suspicious manner.

"There should be a high-level police presence and visibility at the jurisdictional level until further orders," said a newspaper report quoting the advisory note.

While the tone of the advisory note was serious, the top cop of the city later tried to downplay the high alert, terming it as a security drill to check how well the city is prepared in terms of a security threat.