Crews spent nearly five hours tackling a big fire at a scrap metal yard in Cardiff Bay.
South Wales Fire and Rescue Service says it was called out to European Metal Recycling at Roath Dock shortly before 10.45pm on Thursday night.
Eleven fire crews from across the region attended the scene, where around 200 tonnes of scrap was alight.
They tackled the blaze externally using aerial appliances and pumping water from the dock.
South Wales Police urged nearby residents to keep their windows and doors closed and warned drivers on the A4232 due to heavy smoke billowing in the area.
Crews received the stop message shortly after 3.35am on Friday morning.
No one was injured and an investigation into the cause of the fire is underway.
A Fire Service spokesperson said: "Nine fire engines, two aerial hydraulic platforms, incident command control units, one water bowser and one environmental protection unit were deployed to the scene."
"Crews from Cardiff Central, Penarth, Roath, Whitchurch, Ely, Barry, Duffryn, Caerphilly, Pencoed, Maindee and Tonypandy attended the scene of approximately 200 tonnes of scrap on fire."

Former Holm View Leisure Centre could become education and community hub
ScoutsCymru members represent Wales at Royal Albert Hall Festival of Remembrance
Plans for indoor market at former Barry Wilko move forward
Police given additional powers to deal with anti-social behaviour in Barry
Senedd passes supplementary budget with £60m boost for additional learning needs
Future of planned festive events in question after criminal damage to Barry Town Hall
Consultation to open on plans for 35MW solar farm near Penarth
No Trains through the Vale of Glamorgan this Sunday
Police and Cardiff City launch operation to tackle matchday anti-social behaviour
Free leaf and fallen fruit collections return in the Vale
Barry retains Fairtrade Town status until 2029
£1m improvements planned for Pencoedtre Park as splashpad work set to begin
Plan submitted for new independent school on site of well-known charity farm
Is your hot water bottle safe?
Solicitor sentenced for defrauding Cancer Research UK
Cate is crowned champion!
WATCH: Winner of The Voice UK Cate McHugh duets with Sir Tom Jones
Barry filmmaker takes her documentary to the big screen in New York
Pupils leave their mark on new school at steel signing event
£3m refurbishment plans revealed for Cowbridge Town Hall