Protesters who hold UN soldiers from Nepal responsible for a deadly outbreak of cholera which has killed nearly 1,000 people have barricaded Haiti’s second-largest city, burned cars and stoned a peacekeeping base.

Rescue crews working under the glare of floodlights dug through the rubble of a collapsed school in Haiti early today in a frantic search for students who may still be trapped in a disaster that has already killed at least 47 people.