Cause of woman's death in house fire still unknown

The cause of death of a woman killed in a house fire on Boxing Day remains a mystery, an inquest heard.
Susan Woods, 72, was found dead at her home on Carterford Drive in Old Catton, near Norwich.
At the opening of an inquest, senior coroner Jacqueline Lake described Ms Woods' provisional cause of death as "unascertained".
A full inquest will take place on 4 September at Norfolk Coroner's Court.
Emergency services were called to reports of a fire at about 04:00 GMT on 26 December.
Norfolk Police said a cause for the blaze could not be established, but that it was not treating it as suspicious.
Fire crews from North Earlham, Wroxham, Aylsham, Hethersett, Acle and Long Stratton all attended, alongside an aerial ladder platform from Great Yarmouth.
An urban search and rescue team from Dereham were also called.
Ms Lake said she was obtaining reports from Norfolk Police, Norfolk Fire and Rescue Service, adult social services and Ms Woods' GP as part of the investigation.
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