"We firmly condemn the 12 April military uprising and demand the quick return of constitutional order, return of constitutional order, " Kumba Yala, the Social Renewal Party leader, was quoted as saying.

BBC: Guinea-Bissau junta agrees pact with some parties

Iron ore was the largest contributor to Anglo's profit in 2011, but the firm said production at its key Kumba Iron Ore unit fell 19% to nine million tonnes, after five million tonnes of production were lost at its Sishen mine due to the strike.

BBC: Anglo American in platinum production slump