The trial into the deaths of five members of the same family in a fire has heard that no one would have been able to escape through the windows without breaking them.
Mr Stephen Andrews, a forensic fire investigation consultant, told the court that following extensive examination, he believed that the fire was started by a naked flame being held against a baby pushchair which was in the small communal hall on the ground floor.
Following extensive tests and the use of a specially trained dog used to detect flammable liquids he ruled out the possibility that the fire could have started by flammable material being poured through the letter box or by a carelessly discarded smouldering cigarette.
He said that in his opinion the "fire was started intentionally.”
Melanie Smith denies five charges or murder following the fatal fire at Maes y Groes in Prestatyn on October 19 of last year.
More top news
Public Health Wales has spoken to ITV Cymru Wales about how to safe and well during the winter months.
Paramedics are poised to deal with any emergency – but 35,000 feet in the air is the last place you'd expect to have to spring into action.
Human remains, thought to be those of an Irish woman who went missing in the mid 90s, have been exhumed from a grave in North Wales.