An explosion and fire at a wind farm under construction in northeast Nebraska has injured three workers.

One man, who was atop a tower when a turbine exploded, received first- and second-degree burns in the fire Tuesday morning. Two others, who were nearby, were treated for smoke inhalation and released.

Edison Mission Group Inc. is building the 80-megawatt Elkhorn Ridge wind farm north of Bloomfield.

Edison spokeswoman Susan Olavarria says the worker who suffered serious burns was taken to a hospital, but she didn't know his current condition.

Olavarria says all the injured employees worked for subcontractor Vestas Wind Energy. Vestas officials said they don't yet know what happened.