Oklahoma tornado: Fatal school collapse
Emergency workers in the US are continuing to search for survivors of the tornado that tore through a suburb of Oklahoma City on Monday.
Neighbourhoods were flattened by winds of up to 200mph (320km/h).
Much of the rescue effort was concentrated on what remains of Plaza Towers Elementary School, which took a direct hit.
Betsy Randolph, of the Oklahoma Highway Patrol, told BBC News: "The children that sought shelter there... did so with the belief that they were going to be safe"
21 May 2013