Firefighters were called to tackle a blaze at Manchester United's Old Trafford football ground.
Crews were called at about noon after a fire started at the rear terrace on the seventh floor of the stadium where building work is taking place.
The fire service said it was put out within 40 minutes by three fire engines and an aerial appliance.
More than 25 firefighters dealt with the fire and building workers were cleared from the site.
Scaffolding and a gas cylinder being used at the building site at the ground were involved in the incident, said a spokesman for the fire service.