STAMFORD, Conn. (CBSNewYork/AP) — Investigators are re-interviewing the two survivors of a Christmas morning fire in Stamford in which three young girls and their grandparents died.

Police and fire officials say they agreed to give Madonna Badger and Michael Borcina time to mourn the loss of Badger’s daughters and parents. Police Capt. Richard Conklin says, “But now we’re moving ahead on that.”

Authorities have said the embers from the fireplace that were left in a bag in the mudroom of the home started the fire.

Killed were Badger’s three daughters, 9-year-old Lily and 7-year-old twins Sarah and Grace, as well as her parents, Lomer and Pauline Johnson.

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Investigators said Lomer died while trying to save one of his granddaughters.

Badger and Borcina, a friend and contractor who had been renovating the house, managed to escape the fire. Officials now want to determine whether the house had working smoke detectors.

(TM and Copyright 2012 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2011 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.)

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