A man has been charged with the murder of his baby daughter.
Four-month-old Willow Lee was found seriously injured at a house in Onslow Road, Blackpool, on December 3, a spokesman for Lancashire Police said.
She was taken to hospital but died three days later.
Her father, Jordan Lee, 28, of Onslow Road, was initially charged with attempted murder.
A police spokesman said, following her death and after consultation with the Crown Prosecution Service, he had been charged with murder.
Lee will appear at Preston Magistrates' Court on Wednesday.
A Home Office post mortem has been carried out but further expert analysis is needed to determine Willow's cause of death, police said.
Anyone with information should call police on 101, quoting log 1135 of December 3 or independent charity Crimestoppers on 0800 555 111.
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