A community has been left "shocked" by the death of a two-year-old girl who is believed to have fallen from a window.
A woman, thought to be 36, was found with her and is fighting for life in hospital.
Police said they are not looking for anyone else in connection with the incident in Bradford.
Officers were called by paramedics after reports that a woman and child had been found unconscious outside the back of an address on Delamere Street yesterday morning.
Labour councillor for Little Horton, Sher Khan, described the incident as "unbelievable".
He told the Telegraph and Argus that neighbours who live in the street said the girl had fallen from the upstairs window of a terraced house and the woman had fallen afterwards.
"The family had just recently moved into the area," he said.
"It's unbelievable. Apparently, the woman had recently moved from somewhere else - another city - to this area. My understanding is that nobody knew her that well.
"It happened at about 9.15am. Everyone is so shocked."
Detective Chief Inspector Jon Morgan said last night: "Police were called by paramedics to Delamere Street, Bradford, at 9.15am today, following reports that a woman and child had been found unconscious outside the back of an address.
" The child, a two-year-old girl, was taken to hospital with serious injuries but was sadly pronounced dead a short time later.
"The woman, who is believed to be 36, was also taken to hospital where she is currently being treated for her injuries. She remains in a critical condition.
"A forensic post-mortem is due to take place tonight.
"Inquiries into this incident are at an early stage but we are not looking for anyone else in connection with it. I would ask anyone with information to call the police on 101."