An early morning fire at a Greenfield apartment complex has left two families homeless. The blaze broke out at 1:30 this morning near the intersection of Elm Avenue and Eighth Street. Offiicials say flames engulfed a ground unit. The complex was immediately evacuated while crews kept the fire from spreading to other units. Additional resources were called in as a precaution. The cause of the blaze is still under investigation. No injuries were reported.