Investigation underway into cause of SW Austin fire

An investigation is underway into what caused an early morning fire in Southwest Austin. It happened around 5:30 a.m. in the 8100 block of Ganttcrest Drive.
Crews arrived to find fire in the garage of a two story home.
Firefighters knocked it down pretty quickly and were able to keep it from spreading to the house.
The garage suffered heavy damage along with two vehicles while the house sustained some smoke damage.
No one was hurt.