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
What are our chances of seeing meteors in the sky tonight?
Settled, but for how long? Find out the latest here
Could you be a potential lifesaving match for someone with blood cancer? Find out how you can sign up on a stem cell donation register .