A four-year-old girl was mauled to death by a family pet in what has been described as a "tragic, isolated incident".Thames Valley Police said no arrests have been made and that investigators are working to establish the breed of the dog.The animal was put down by police on Tuesday evening after officers were called to a house in Broadlands, Netherfield, Milton Keynes, by the ambulance service.

A four-year-old girl was mauled to death by a family pet in what has been described as a "tragic, isolated incident".Thames Valley Police said no arrests have been made and that investigators are working to establish the breed of the dog.The animal was put down by police on Tuesday evening after officers were called to a house in Broadlands, Netherfield, Milton Keynes, by the ambulance service.