Police say a man injured in a Bedminster house fire has been arrested.
The Assistant Chief Constable of Avon and Somerset Constabulary says the man remains in hospital as a result of his injuries and will be questioned as soon as he is well enough.
ACC Peters has thanked residents for their "ongoing patience and support" after the fire forced some people to evacuate.
The assistant chief constable says she understands residents' desire for information about the situation.
“Given the complex situation which we are faced with, it has not always been possible to share as much information as we would like.
“We have had to bring in specialist scientists as well as experts from the Explosive Ordnance Disposal unit to examine the substances and I am pleased to say they have almost completed their work."
Days after the incident, some residents have not been able to return to their homes.
ACC Peters says police hope the situation can be resolved soon but cannot confirm that residents will be able to return tonight.
“There are a significant number of hazardous substances within the property and until we are certain what they are, we cannot risk lifting the cordon.
“I do not want to speculate on the circumstances which led to the fire but we do believe this to be an isolated incident and we have no reason to believe it is in any way connected to terrorism.”