A large fire at a condo in Downtown Austin that displaced 18 people was caused by welding, the Austin Fire Department said.

The Austin Fire Department said the fire broke out Tuesday shortly before 11 a.m. in the wall of a three-story condo that extended into the attic at 606 West Lynn Street near 6th Street. AFD said that some type of welding or maintenance started the fire on the second floor.

At 11:23, the fire was upgraded to a three alarm fire before crews got it under control at 11:47 a.m. AFD said the roof of one apartment partially collapsed, and two other apartments suffered significant damage. Smoke and fire control damage was reported in a few other units.

The fire, which was contained to three apartments, resulted in no injuries, AFD said.

The fire department said 18 people were displaced temporarily. AFD said $750,000 worth of damage was caused to the structure with $150,000 worth of damage caused to the contents.

Fire on West Lynn and Sixth Street in downtown Austin Tuesday, Oct. 10, 2017.

The fire was visible from KVUE's tower camera. Here's a live stream of the smoke:

Check back on this story for updates.