Tear gas fired in Sao Paulo three days before World Cup

Riot police have apparently fired tear gas at striking metro workers in Sao Paulo, three days before the World Cup kicks off in the city.

Correspondent Lulu Garcia-Navarro, for the public radio network NPR, tweeted this picture:

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Good morning #saopaulo #WorldCup2014 . Metro strike continues and we love the smell of tear gas in the morning. http://t.co/hguunnHt2r

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More: Sao Paulo subway strikes enter fifth day

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Sao Paulo subway workers halt strikes for two days

Striking subway workers in the Brazilian city of Sao Paulo have halted their action for two days, union leaders have said.