- The woman was taken to hospital and the dog has since been destroyed
An XL Bully dog mauled its owner at home before escaping to a nearby school which was forced to evacuate.
The owner of the dog, in her 60s, could be heard screaming for help as she was attacked in her back garden in Brisley, Norfolk, on Monday afternoon.
Police rushed to the house where they helped free the victim from the vicious attack but Denvor the dog managed to flee and ran free through the streets.
The dog was found an hour later in the car park of Brisley Church of England Primary Academy.
All pupils were rushed inside the building until the XL bully was tied to a post then the school was able to evacuate.
Police said that with permission of the owner and in the interest of public safety, the dog – which weighed about six stone – was destroyed.
The victim was meanwhile taken to Norfolk and Norwich University Hospital with multiple non life-threatening injuries.
Headteacher Belinda Allen told the Eastern Daily Press: ‘Our school staff were alerted by the police that there was a dangerous dog and immediately actioned staff to clear the area.
‘There was no immediate danger to staff or children within the school area.’
Denvor was reportedly adopted from Dogs Trust Snetterton less than a month ago.
Reports said the Dogs Trust had believed he had settled in well to his new home and will now investigate.
Police have described it as a ‘terribly sad and distressing situation’.
Inspector Diana Woodage said officers faced a difficult situation as they arrived to find the woman being ‘viciously’ attacked by her dog.
She said the victim was very clearly injured and in pain.
MailOnline has contacted Dogs Trust, Norfolk Police and Brisley Church of England Primary Academy for further comment.
More follows.