Fire crews searched a former Oxford nightclub after reports a man may be injured on the roof.
A cherry picker was used as firemen checked the roof of the old Warehouse nightclub building earlier today.
Passers-by said builders had heard two loud bangs and called the emergency services.
Two ambulances were also on the scene as crews searched inside the building for more than half an hour.
Watch manager Paul Harding told the Oxford Mail crews were called to reports of a man on the roof possibly injured.
He added that no one was found.