A 60-year-old woman arrested on suspicion of manslaughter after three people died at a Swanage care home has been released without charge.

Police said the deaths of Gainsborough Care Home residents – two men aged 74 and 91 and an 86-year-old woman – were still being treated as unexplained.

They previously said carbon monoxide poisoning was the main line of inquiry.

Seven people were also taken to hospital and the property was evacuated the incident last month.

Detective Chief Inspector Neil Third said Dorset Police were still working with the medical examiner to try to determine the cause of death.

He said the woman had been arrested “to take a full account and recover any available evidence, while providing legal protection to the individual”.

DCI Third said he no longer believed she was responsible for “actions or omissions” that were grossly negligent.

The Chief Inspector added: “Our investigation is still ongoing and we await the results of depositions and detailed forensic analysis to assist us in determining the causes of death, which could take several months.

“The families of the residents who have sadly died are being kept informed of any updates to the investigation.”

Read more from Sky News:
Call for dog-free zones in Wales to tackle racism
Apple sued by Which? by using iCloud

Follow Sky News on WhatsApp

Keep up to date with all the latest news from the UK and around the world by watching Sky News

Tap here

The care home, run by Agincare, has 48 residents, all elderly and some with dementia.

All residents were evacuated to a nearby church hall when the emergency unfolded on the morning of 23 October.

An emergency response team, 10 ambulances and six fire crews were dispatched, while gas engineers were later seen investigating the scene.