A teenager is being sentenced later for starting a fire which killed four brothers and sisters.
Twins Holly and Ella Smith and their brother Jordan died in Freckleton, along with their elder brother Reece.
19 year Dyson Allen has been found guilty of manslaughter.
A joint investigation was launched with Lancashire Fire and Rescue Service.
It established that the fire was caused by a naked flame being held to clothing inside a wardrobe in the children's bedroom.