Ten fire engines have been on the scene of a major fire on the Lune Industrial Estate in Lancaster.
Residents in the vicinity of Port Royal Avenue have been advised to keep their windows and doors shut.
An eye-witness told Beyond Radio they saw smoke coming from the former A1 Supa Skips/power station site.
A spokesperson for Lancashire Fire and Rescue said on Sunday morning: "The fire involves a large building containing commercial waste.
"A large smoke plume is visible from the site and firefighters are using specialist equipment such as aerial ladder platforms, a stinger and hazardous materials unit to bring the fire under control.
"People in the local area are advised to keep out of the smoke plume and keep windows and doors shut if they can see or smell smoke.
"No injuries have been reported and we are working with partners to make the site safe. A number of road closures are in place and people are advised to keep clear of the area."
This clip shows smoke billowing above the industrial estate and nearby houses on Sunday morning.
The photo below shows smoke coming from the estate on Sunday morning.
Firefighters tackling the blaze on Sunday morning.