"Police believe that Sophie died between Saturday 27th July and 1st August," Detective Inspector Hollands said.
"She did not appear to suffer any injury or medical condition that would explain her death.
"As a result of certain inconsistencies in witness versions and in the autopsy results, we now believe that Sophie's death was suspicious."
Detective Inspector Stephen Hollands said that Sophie did not appear to suffer any injury or medical condition that would explain her death.(Nine)
Police said at the time there was no evidence of a break-in, or any other signs that would suggest the death was suspicious.