At least a 157 people have been killed after a violent army crackdown by military junta in Guinea.The number of victims represents the worst carnage in a single day since the African state’s independence in 1958 and is almost certain to rise. The UN and former colonial power France have strongly condemned the excessive use of force that also left more than 1,200 injured. Thousands had gathered at a stadium near the capital Conakry to protest against the military regime of Captain Moussa Dadis Camara, which seized power last year. Mayhem broke out when security forces used live rounds to disperse the banned rally. There were also some reports of troops bayoneting people and raping women, something the coup leaders deny. Dadis Camara took charge last December after the death of President Lansana Conte. He has promised presidential elections and opponents held the rally after rumours Camara intended to stand himself in the 2010 poll. Tension between opposition supporters and the regime has increased in recent months fueling instability in the resource rich country.