Police are not looking for anyone else over the death, as Dan Johnson reports.
A woman has been arrested on suspicion of murdering her two-year-old daughter in Bradford.
The girl was found unconscious with her mother outside a house in Delamere Street on Tuesday morning and died later in hospital.
A post-mortem examination revealed the girl died from injuries consistent with being caused by a fall, West Yorkshire Police said.
The girl's mother is still critically ill in hospital.
Police said they were not looking for anyone else in connection with the death.
A single bouquet has been placed outside the
Sher Khan, the Labour councillor for Little Horton, said he lived locally and thought the occupants of the house had moved in about a year ago.
"I can't recall anything like this, believe me people are shocked," he said.
Mr Khan, who represents the area on Bradford council, said it was a "nice place with close-knit families".
A neighbour of the injured woman said: "I'm shocked, I feel upset... I feel really disturbed.
"It is a quiet little street and this has come out of the blue."
Det Ch Insp Jon Morgan said police had been called by paramedics at about 09:15 GMT on Tuesday.
"The child, a two-year-old girl, was taken to hospital with serious injuries, but was sadly pronounced dead a short time later," he said.
He urged witnesses or anyone with information to contact police.