People in the path of a plume of smoke from a massive tyre fire in Londonderry should stay inside and shut their doors and windows, the Fire Service has said.
More than 10,000 tyres were on fire at a depot in the Pennyburn Industrial Estate, reported at 1220 BST.
At the height of the blaze it took 41 firefighters to bring it under control.
Jonathan Tate of the Fire Service said people in the Hazelbank, Ballymagroarty and Northland Road areas should close their windows.
"The wind conditions are not in our favour this morning and that is preventing the smoke plume from being dispersed," he said.
"If anyone is in the way of the plume they should keep their doors and windows closed."
The cause of the tyre fire is still under investigation.
www.news.bbc.co.uk