ROUND ROCK, Texas (KXAN) — Residents of 21 apartment units were displaced Tuesday after a fire damaged their building.

The Round Rock Fire Department responded shortly after 8 a.m. to Terrastone Travesia Apartments, located on Quick Hill Road. That is near FM 1325 and SH 45.

Round Rock FD said no injuries are reported so far. However, there is water damage to all of Building 13 at the complex, and 75% of the roof of the building is gone.

Viewer-submitted video shows a fire burning at a Round Rock apartment complex. Courtesy: Nathan A. Manhart.

Fire crews were able to stop the progress of the fire shortly before 9 a.m., according to a press release from the City of Round Rock.

Responding crews included the Round Rock, Pflugerville, and Austin Fire Departments along with Williamson County Sheriff’s Office and Williamson County Constable Precinct 4. Williamson County EMS was also on standby.

The Williamson County Fire Marshal’s Office is investigating the fire and has two investigators on the scene performing interviews and working to determine the cause.

Terrastone Travesia Apartments said there should be enough open apartments to place residents who were affected by the fire.

Red Cross is also coordinating with residents to provide resources.

The fire started in the attic of the building. The cause is still under investigation.

This is a developing story. Check back for updates.