Two baby triplets were found dead in their home yesterday. Pictured: Triplets Ethan Noah and Charlie on their godmothers' Go Fund Me page.
Two baby triplets tragically died in their sleep amid claims their deaths were caused by accidental carbon monoxide poisoning.
Single mother Sarah Owens, 29, found two of her 5-month-old boys not breathing when she checked on them this morning.
Paramedics rushed to her rented home in Bridgend, South Wales at 10.05am and took the triplets to hospital where two - Charlie and Noah - were pronounced dead. The third, Ethan, was unharmed.
It was initially claimed the boys died from accidental carbon monoxide poisoning, possibly from a faulty heater.
But neighbours were told by the boys' grandfather - who came to the house to collect possessions - that this had been ruled out.
Police investigating the cause of the tragic accident refused to comment when contacted by MailOnline.
The boys' godmother Siobahn Boyd has set up a GoFundMe page to raise money for Ms Owens. She wrote: "Sadly this morning two of my beautiful godsons passed away. I'm trying to raise money for their mother.
"If anybody would like to help hopefully we can raise enough to take the financial stress off Sarah at this difficult time thank you all for reading xxx".
Police, who said the deaths were being treated as a "tragic accident", would not comment on the theory the infants died from by carbon monoxide poisoning from a heating system in the house.
A South Wales Police spokesman said: "At 10.05am emergency services attended an address in the Wildmill area of Bridgend to a report of two young children, two of triplets, who were found not breathing.
"The 5-month old children were conveyed to hospital where tragically they were later pronounced deceased.
"There are no suspicious circumstances surrounding the deaths which are being treated as a tragic accident."
Officers were not releasing other details of the tragedy as the family were being comforted over the two deaths.
A police source said: "This is a particularly sensitive incident, which is still ongoing."
The South Wales Fire Service declined to comment on their role in the tragedy.
A Home Office pathologist has been called in to carry out a post mortem examination on the two babies.
A file is due to be prepared for Glamorgan coroner Andrew Barkley and an inquest is expected to be opened next week.
The Welsh Ambulance Service confirmed they sent three emergency ambulances to the scene as well as one ambulance car.
The Emergency Medical Retrieval and Transfer Service (EMRTS) Cymru air ambulance was called but ambulances had already left for the the Princess of Wales Hospital by the time it arrived.
Carbon monoxide poisoning
Carbon monoxide is known as the "silent killer" because it is a poisonous gas with no smell or taste.
After carbon monoxide is breathed in, it enters your bloodstream and mixes with haemoglobin (the part of red blood cells that carry oxygen around your body) to form carboxyhaemoglobin.
When this happens, the blood is no longer able to carry oxygen, and this lack of oxygen causes the body's cells and tissue to fail and die.