The dog that mauled a baby to death in Blackburn has been described as "very aggressive and dangerous" by a neighbour, who said the animal had previously entered his garden by breaking the fence.
Locals have claimed they reported dangerous dogs at the address of the killing to police.
Chief Superintendent Chris Bithell said Lancashire Police are making inquiries to see whether there have been previous issues with the dog, but that "at this moment it would be too early to speculate on that".
More top news
Thieves returned a bike stolen from a nine-year-old boy shortly before the first anniversary of his father’s death.
The ride-sharing app Uber's latest update tracks user's locations for five minutes after a journey ends.
Another leader is toppled and the European 'establishment' now stand in terror of voters with 2017 set to host a series of big elections.