Bahrain security forces
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Crackdown on Bahrain opposition

17 March 2011 Last updated at 08:29 GMT

Authorities in Bahrain have arrested at least five key opposition figures, a day after a crackdown on anti-government protesters in the centre of the capital Manama, reports say.

The streets are said to be calm but extremely tense, with soldiers patrolling after an overnight curfew.

Russell Trott reports.