SACRAMENTO -- Crews with the Sacramento Fire Department fought a three-alarm grass fire along the American River Parkway, near Cal Expo.
Smoke from the fire could be seen all around the city.
The fire burned about 45 acres, according to the Sacramento Fire Department.
It was not immediately clear what started the fire.
The fire shut down part of the American River bike trail.
Crews were concerned because the fire was burning very close to power lines behind Cal Expo. If the fire had burned hot enough, it could cause the power lines to fall.
Stay with FOX40 and FOX40.com for the latest on this developing story.