The dog was later put down following the attack on Bidston Avenue in Merseyside.

A toddler has been killed at her home by a dog that was bought just a week ago.

Police said the 17-month-old tot was mauled at the house in St Helens, Merseyside, at around 3.50pm yesterday (Mon).

She was rushed to hospital but tragically died of her injuries.

The scene at Bidston Avenue St Helens after a dog mauled a child Credit: SWNS | SWNS

The dog was later put down and will be subject to forensic examinations to determine its breed and whether it is a legal breed under the Dangerous Dogs Act, police said.

A cordon remains in place as police officers go door to door making inquiries on Tuesday.

What have police said about the dog attack?

Detective Inspector Lisa Milligan of Merseyside Police said: “ This is a tragic incident and our thoughts are with the child’s family at this devastating time.

"The little girl’s parents and wider family are absolutely devastated and our specialist Family Liaison Officers are providing them with support at this horrendous time.

“Whilst we are in the very early stages of the investigation into this extremely tragic incident we can confirm that the dog was only bought by the family a week ago and officers are working to identify the previous owners of the dog concerned and establish its history.

The scene at Bidston Avenue St Helens after dog mauled child to death Credit: SWNS | SWNS

“Our officers will remain on Bidston Avenue this evening and in the coming days to provide reassurance to the local community and we will work tirelessly to establish the full circumstances.

“If you were in the Bidston Avenue area this afternoon and witnessed anything, or have any information about the dog in question then please come forward speak to one of our officers."

Toddler killed by dog bought just a week ago in St Helens - police appeal to trace previous dog owners

What have police said about the dog attack?