Devon and Cornwall Police said initial examinations showed they had died from carbon monoxide poisoning.

BBC: Carbon monoxide deaths: Family 'unconscious in minutes'

Three family members who died from carbon monoxide poisoning would have been "unconscious within minutes", a fire service has said.

BBC: Carbon monoxide deaths: Family 'unconscious in minutes'

He dedicated his winning goals against Northampton and Shrewsbury to close friend Matt Nixon, 22, who died from carbon monoxide poisoning just before Christmas.

BBC: Crewe reject swap deal for Aldershot's Marvin Morgan

In hard-hit Kansas, there were at least six storm-related deaths: two siblings who died of carbon monoxide poisoning from a generator, three people in fatal vehicle accidents and an elderly woman who died of hypothermia sweeping snow off her steps, Gov. Sam Brownback said.

CNN: Drawn-out snowstorm lingers in Maine, New Hampshire

Earlier this year, six-year-old Isabelle Harris, from Gosport, Hampshire, died of carbon-monoxide poisoning after her parents brought a disposable barbecue into their tent to keep warm during a camping trip in the New Forest.

BBC: Nicholas Holmes: Camper van death caused by barbecue

Investigators believe the three died, along with the family's dog, of carbon monoxide poisoning from a cooker.

BBC: Carbon monoxide deaths: Inquests open