A nationwide strike called by the opposition against government plans to amend the constitution has crippled Dhaka, the country's capital. Shops were closed and traffic was disrupted as thousands of security personnel fanned out across the city on Sunday. The opposition's dawn-to-dusk general strike is to protest against government moves to throw out a provision that requires it to give power to a non-partisan administration to oversee elections at the end of its term. The strike shut down schools and shops in Dhaka, a city of 12 million people, and most buses and cars were off the roads. Police detained seven people as scores of opposition members attempted to hold a street protest in the centre of the city, according to private television station ATN News. There was no strike-related damage reported on Sunday, a working day in Bangladesh, but police said protesters set fire to at least 11 buses on Saturday.