GREENFIELD, Wis. (CBS 58) -- Residents of a 2-story Greenfield apartment building have been displaced after a fire broke out at the Southside complex on Christmas morning.

According to call logs, The Milwaukee Fire Department responded to the scene near South 60th Street and W. Cold Spring Road shortly before 7:30 a.m.

The on-duty MFD Battalion Chief says the building will be uninhabitable, but the fire is under control.

A total of 46 units were evacuated at the apartment complex.

There is no word on injuries at this time, but dispatch audio from a first responder indicated several victims were hanging out of windows and needed to be rescued. 

And numerous displaced residents are also dealing with lost Christmas gifts.

The Milwaukee Fire Department says the cause of the fire is under investigation.