Metrodome roof collapses from snow in Minneapolis
The inflatable roof of the Metrodome sports stadium in the US mid-western city of Minneapolis collapsed on Sunday after a snowfall of 17 inches (43cm).
No one was hurt, but a 10-yard (nine-meter) strip of the fibreglass roof was left dangling above the playing field.
The National Football League has been forced to move a game between the Minnesota Vikings and the New York Giants to Detroit on Monday night.
The storm has now moved east, dumping heavy snow on Illinois and Michigan.
Officials are optimistic about the chances of repairing the roof in time for the Vikings' next home game on 20 December.
The Vikings-Giants game had already been postponed for a day and a half because the snowstorm delayed the New York team's flight.
The Metrodome covers an area of 20 acres (eight hectares), with a 10-acre roof made of fibreglass coated in Teflon. The roof is 195 feet (60m) high and is supported by 20 electric fans.