A woman has been arrested on suspicion of manslaughter after three people were found dead at a care home in Swanage.
Dorset Police said it had arrested the 60-year-old woman "to enable us to establish whether there have been actions or omissions which are grossly negligent and gather as much information as we can about what has happened".
The deaths are currently being treated as "unexplained" and possible carbon monoxide poisoning is the "primary line of inquiry", police said in an update earlier on Wednesday.
Seven people from the Gainsborough Care Home in Swanage were taken to hospital "as a precaution" and the property has been evacuated. Police added there is no risk to the wider public.
A spokesperson for Southern Gas Network confirmed it had been called to Gainsborough Care Home.
The Gainsborough Care Home, run by Agincare, has 48 residents, all elderly and some with dementia.
All the residents were evacuated to a nearby church hall, with some in wheelchairs.
A spokesperson for the care home said it had sent "extra staffing resources" amid the incident and said the wellbeing of residents was its "over-riding priority".
Gary Suttle, a member of Dorset Council, said: "Our condolences and sympathy are with those who have lost their lives in this tragic event."
He thanked locals for coming into the church where people had been evacuated to, bringing blankets in acts of "great community support".
South Western Ambulance Service said it was called to the home in Swanage at 5.20am and sent a hazard response team, 10 ambulances, and "a significant number of additional resources".
A spokeswoman for Southern Gas Network said: "We were called to Gainsborough Care Home in Swanage earlier today in our capacity as the national gas emergency service for the south of England.
"Our engineers are waiting for access to the building to complete safety checks.
"Our thoughts are with everyone who has been affected by this tragic incident."
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Dorset and Wiltshire Fire and Rescue Service said it had sent four crews to the scene in Ulwell Road after it was called at 7.47am, with another two crews from the Hampshire and the Isle of Wight services also there.
Group manager Neil Tidball said: "Firefighters are working with Dorset Police, South West Ambulance Service and other partners to resolve this incident."
(c) Sky News 2024: Swanage care home: Woman, 60, arrested on suspicion of manslaughter after three people found dead
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