A woman and a young girl have died and a man was seriously ill in hospital after suffering breathing difficulties on a boat in the Lake District.

The alarm was raised when police and an ambulance were called to a private boat at Lake Windermere.

A 36-year-old woman and a 10-year-old girl were treated at the scene and then air-lifted to Royal Lancaster Infirmary, where both died.

The man, who was also on the boat, was still receiving treatment at the Royal Lancaster Infirmary, Cumbria Police said.

A spokeswoman for Cumbria Police said: "Cumbria Police can confirm that at approximately 4pm today, they attended an incident at Lake Windermere, where it was reported that three people on a private boat on Lake Windermere were having serious breathing difficulties.

"Police attended along with an ambulance crew.

"A 36-year-old woman and a 10-year-old girl, both from the Leyland area, were treated at the scene and then air-lifted to Royal Lancaster Infirmary. Unfortunately both have since tragically died.

"A man, who was also on the boat, is still receiving treatment at the Royal Lancaster Infirmary."

The spokeswoman added that police are investigating and the coroner has been informed.

Cumbria Police said they were unable to confirm reports the deaths were the result of carbon monoxide.

The incident, at a jetty near Bowness, was seen by Clydebank businessman and TV personality Duncan Bannatyne, who remarked on the incident on Twitter.

The Dragon's Den star posted a photograph of the scene, saying: "Tragic accident over there I am afraid."