Investigators today began sifting through the wreckage of an exhibition hall in southern Poland to establish why its roof collapsed under a layer of snow.

RESCUERS last night abandoned hope of finding more survivors in the wreckage of an exhibition hall that collapsed in southern Poland.

Polish authorities said today that they were unlikely to find more survivors under the twisted wreckage of an exhibition hall that collapsed during a racing pigeon show, killing at least 66 people and injuring 160.

Rescuers were today searching for victims buried when the roof of an exhibition hall in southern Poland collapsed on a racing pigeon show, killing at least 65 people and injuring a further 160.