Emergency services are in attendance at an “ongoing incident” at a city industrial estate.
Police and fire were called to Wellington Circle in Altens just after 6.30pm after reports of staff at the Royal Mail delivery office feeling unwell.
A spokeswoman for the Scottish Fire and Rescue Service said: “We were asked to attend by Police Scotland following reports of staff at the centre feeling unwell.
“It’s not yet known what has caused this.”
A police spokesman said: “We are in attendance at an ongoing incident.”