Police and fire services are still at the scene of the fire in a disused building in Pearl Street, in the Splott area of Cardiff.
A South Wales Police spokesperson said the fire was reported at around 12.40pm.
Road closures affecting Agate Street, Pearl Street and Splott Road are in place.
Police and fire services are still at the scene of the fire in a disused building in Pearl Street, in the Splott area of Cardiff.
A South Wales Police spokesperson said the fire was reported at around 12.40pm.
Road closures affecting Agate Street, Pearl Street and Splott Road are in place.
Some neighbouring properties have been evacuated as a precaution, with people in the area advised to keep doors and windows shut and to remain indoors.
Rain clipping the far north through the evening but elsewhere staying dry with some sunny spells.
Public Health Wales figures show 25 more cases of the virus have also been confirmed.
Photos taken on Saturday morning show Roald Dahl Plass strewn with empty beer bottles and discarded canisters of laughing gas.