Teenagers have told a court that they witnessed drinking, smoking and the taking of cannabis at a bungalow in Lancashire where 4 brothers and sisters died in a fire.
19 year Dyson Allen denies murdering the siblings.
Preston Crown Court heard claims that he was the only other person upstairs at the dormer bungalow when the blaze broke out.
Elaine Willcox reports.
More top news
A windy weekend with gales on Saturday night, gusts 60-65mph for hills and coasts. Grey Saturday with rain, sunshine & showers Sunday
Greater Manchester will become the first in the country to be handed full control of it's entire £6 billion NHS budget
Everton, the only British side left in the Europa League, have been handed a tough tie against Dynamo Kyiv in the last 16 round