Further tests have now been completed by the pathologist who has given a result of carbon monoxide intoxication.
A petrol-driven pump was seized from inside the home address at the time of Zane's death and Surrey Police is conducting further inquiries to establish whether there is any liability or criminal offences in respect of the hire company who provided this equipment.
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There's been a sharp rise too in rape, burglary and robbery have during what police "busy and challenging time".
Police are looking for a man caught on a security camera before sentimental jewellery and perfume was taken from a pensioner's home.
"All it takes is for somebody to see me - and I could just die, just like that. I could want to go to the shop and not come home."