Hamerton Zoo Park where zookeeper Rosa King was killed by a tiger on Monday will remain closed “for the time being.”
A joint investigation has now been launched by Cambridgeshire police and Huntingdonshire District Council, the licensing authority.
A police spokesman said: “It was agreed at a meeting between the police and the district council that we would work with the district council to assist with investigation within routine protocols.
“As the investigation is on-going it would be inappropriate to comment further at this time.”
Ch Insp Donna Wass added: “While there are no suspicious circumstances, the death of the zoo keeper is still unexplained, and the police have a duty to report to the coroner, which is why the police investigation is ongoing.
“Huntingdonshire District Council have a responsibility for health and safety and licencing at the zoo and are investigating these aspects.
“This is why both parties are still involved and will work together on a joint investigation.”
Hamerton Zoo said in a statement: “It is with huge regret that we confirm that Rosa King, a senior zoo keeper who was an invaluable and highly respected member of our team, died on Monday morning after entering a tiger enclosure at Hamerton Zoo Park.
“Our thoughts and deepest condolences are with Rosa’s family and friends, many of whom worked alongside her at the zoo.
Nigel McCurdy, for Huntingdonshire District Council, said: “The council sympathises with the family and friends of the zookeeper and offers its condolences.
“Both the police and the council are working together within routine protocols to progress investigations into the incident as efficiently and effectively as possible.
“Whilst those investigations are ongoing, it is inappropriate for the council to comment further.”
“We are co-operating fully with the investigation that is currently being conducted by Huntingdonshire District Council Environmental Health Department.”
Hamerton Zoo is to remain closed “for the time being”