KNOXVILLE, Tenn. (WATE) — Crews with the Knoxville Fire Department worked a residential structure fire Wednesday morning. No one was occupying the condo unit at the time of the incident, according to KFD officials.

KFD also shared that the condo unit, located in the 500 block of Riverfront Way, had recently been purchased and most of the damage caused by the fire was interior.

A news release shared by KFD states crews initially responded to the fire at 8:22 a.m. The Knoxville Police Department also responded to the scene just before fire crews and reported smoke coming from the end of the building; officers began to attempt evacuating the building.

Once KFD crews arrived on the scene, they could see smoke rising from the end unit of the condominiums. They were able to extinguish the fire within 10 minutes.

The condo unit sustained heavy damage to the front end, KFD said, and the unit below it sustained moderate water damage from the firefighting water. The other units in the building were not damaged.

This is a developing story. Download the WATE 6 News app to get updates sent to your phone.

The unit had been under renovation, so it was unoccupied at the time of the fire.

An investigation is underway to determine the cause of the fire.