Supt Emma Baillie, from Thames Valley Police, thanked the community for supporting the investigation.
“We understand that an incident like this can be concerning for the local community, but I want to reassure people that following a thorough joint investigation with BFRS, we have found no evidence of any criminality,” she said.
“The fire is believed to have been accidental in nature, and thankfully no-one was injured. I would also like to commend the staff at Pink Punters, who worked quickly and effectively to ensure everyone was safely evacuated.
“We would like to thank members of the community who came forward and assisted us with our inquiries. Their support and cooperation has been invaluable as we worked to establish the circumstances surrounding the incident.”
