At least 87 people have been killed after troops in Guinea opened fire on a huge opposition rally in the capital Conakry, reports say. An earlier death toll of 58 rose by nearly 30 late on Monday, according to unnamed police sources. Some 50,000 people rallied against Capt Moussa Dadis Camara who seized power in Guinea in a bloodless coup last year. The rally was triggered by indications he is to reverse a pledge not to run in a presidential vote set for January.