Fire crews at the scene after members of the public reported smoke coming from the building.

Firefighters have been unable to find the source of smoke in an office building in the Auckland suburb of Parnell.

The Heinz-Watties building on Parnell Road was evacuated on Friday afternoon after smoke was seen coming from the fourth floor, a fire spokesman confirmed.

The spokesman said the smoke was likely due to electrical burning, but no source was found.

Google Maps The Heinz Watties building on Parnell Road has been evacuated after reports of smoke coming from the fourth floor.

Nine fire trucks initially attended the incident, and thermal imaging cameras were used in an attempt to find where the burning occurred.