Crews worked to control a South Knoxville structure fire on Thursday morning.
The commercial structure located at 3846 Martin Mill Pike was vacant, according to a Knoxville Fire Department tweet.
Crews shut down Martin Mill Pike at West Blount Avenue for part of Thursday morning due to the fire.
Fire crews had to cut through the metal roof of the building to control the fire.
Authorities are investigating the cause of the fire.
Fire crews having to cut through metal roof of building pic.twitter.com/opw3TXIhJx— Knoxville Fire (@KnoxvilleFire) October 6, 2016
Vacant commercial structure 3846 Martin Mill, no injuries, difficult time getting to the seat of the fire. pic.twitter.com/9fXq10aLeR— Knoxville Fire (@KnoxvilleFire) October 6, 2016