Amnesty International has urged the Egyptian authorities to release hundreds of people it said were arrested during anti-government protests last month. “Egyptian security forces have used tear gas, batons, birdshot and on at least one occasion live ammunition, and arrested hundreds of protesters and bystanders to disperse rare scattered demonstrations over several days,” Amnesty said in a statement on Friday. At least 496 individuals are currently imprisoned as a result of the crackdown, according to the London-based rights watchdog.