ABOVE: Hertfordshire's Chief Fire Officer Roy WilsherHertfordshire's Chief Fire Officer has described the death of a mother and three children in a fire in Harlow as "tragic..."
Roy Wilsher's spoken out, after the fire on Barn Mead this morning (October 15th).
Hertfordshire Fire and Rescue service also say their thoughts are with the family of the victims.
An investigation has now started into what caused it.