Firefighters have been tackling a blaze at Leicestershire's County Hall, after a generator caught fire.
Staff at the County Council's head office were evacuated and fire crews were called at 8.42am on Monday 15 July.
Leicestershire Fire and Rescue Service control said the blaze was being dealt with by three fire crews at the scene.
A spokesman for Leicestershire County Council has confirmed that staff were evacuated from the building when the fire was first spotted but were allowed back inside at about 9.15am.
A statement released by County Hall states: