The Chattanooga Fire department was called early Tuesday morning to a house fire on Fagan Street.

It started around 3:30 a.m.

Chattanooga Police tell Channel 3 a person passing by saw smoke and called 911.

Fire crews put the fire out by 4:00 a.m.

We're working to find out if anyone was hurt and the extent of the damage.

The cause of the fire is under investigation.

Stay with Channel 3 on air and online as this story continues to develop.