Man, 21, charged with murder of baby girl
A post mortem examination showed the girl, of Davidstow Close on Hull's Bransholme estate, had died from internal injuries.
A 24-year-old woman has been released on police bail pending further inquiries.
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Hide AdIn a statement, the girl's biological father said: "On Monday I received the tragic news that my little girl had been taken from us forever. This is a traumatic time for me and both families.
"I would appreciate it if everyone could leave us to grieve in peace and allow the police to do their job."
Anyone with information should contact the Tower Grange Major Incident Team on 01482 796271.