The sudden show of force after several weeks of relative quiet in the country's largest city appeared aimed at forestalling any protests to mark the one-month anniversary of a key day in the anti-regime uprising by Buddhist monks, activists and ordinary citizens.
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Barbed wire was erected around the area while police also took up positions near the Sule Pagoda in the heart of the city and other sites of earlier protests.
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There were no immediate signs that any public protests would take place but thousands of pilgrims thronged to the Shwedagon and other pagodas.

A Burmese reporter who tried to take a photo of the pilgrims climbing up the eastern gate of the Shwedagon was immediately surrounded by nearly a dozen riot police and a police officer confiscated the flash card from the camera.
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