Investigators puzzled by Brookfield house collapse

October 5, 2011 2:34:25 PM PDT
Firefighters are trying to figure out what caused a home to collapse in west suburban Brookfield.

It happened in the 4100-block of Raymond.

Investigators say the home was built at the turn of the century.

The collapse happened some time overnight.

The home was being renovated, so no one was inside when it collapsed.