Ethiopia's prime minister has declared a state of emergency after months of unrest he says threatens the nation's stability. Paul Chapman reports. These were the scenes just over a week ago when police fired tear gas and shot into the air to disperse anti-government protesters at a religious festival in the Ethiopian town of Bishoftu. It triggered a stampede in which scores of people died. The incident was part of months of unrest which led to Sunday's declaration of a state of emergency. Ethiopia's prime minister says the measure is needed because the unrest is the threat to national stability. Opposition parties say it's another attempt by the government to hold on to power. The unrest in Oromiya region started last year when anger over a development scheme for the capital turned into wider protests against the government. The unrest has included attacks on businesses, many of them foreign-owned, casting a shadow over what's become one of African's fastest growing economies. Rights groups say more than 500 people have died in the unrest. The government says the figure is inflated.