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
Scientists at Swansea University investigated fossils of huge marine animals which lived between 5.3 million and 9,700 years BC.
First Minister unveils plans to introduce a minimum price for alcohol as part of his government's legislative priorities for the year ahead.
The Welsh Government cabinet is expected to meet today to decide whether to financially back the proposed Circuit of Wales racetrack.