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
Staying windy and unsettled
David Cameron has admitted the General Election is on a "knife-edge" as he tried to woo voters with the promise of a "truly seven-day" NHS.
Two murderers who wed in Britain's first gay prison marriage will not be allowed to share a cell.