STAMFORD, Conn. (CBSNewYork) — A police report on the deadly Christmas day fire in Stamford is expected to be turned over to the state’s attorney today.

Three sisters and their grandparents died in the fire. The girls’ mother, Madonna Badger and her boyfriend Michael Borcina, survived. Investigators determined the fire was started by improperly discarded fireplace embers.

Now, the girls’ father, Matthew Badger, is taking steps that may lead to a lawsuit.

A decision to file criminal charges has not yet been made.