Firefighters evacuated about 200 people from a building in Dickson on Thursday afternoon after responding to an automatic fire alarm.
ACT Fire & Rescue crews were alerted to the incident on the corner of Northbourne Avenue and Antill St just after 2.39pm.
They arrived to find visible signs of smoke. A spokesperson said afterwards that the cause of smoke appeared to have been the tripping of electrical circuits in a computer room.
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Two Pumpers were on scene, along with a breathing apparatus support van and hazmat unit.
Crew members completed atmospheric monitoring and evacuated staff were able to re-enter the building shortly before 4pm.