Police discovered the youngster inside the address with multiple stab wounds including a serious head injury.
The announcement comes after the young girl Jasmine Forrester, sadly passed away in hospital in Wolverhampton this morning.
Meanwhile, the injured girl is battling for her life and is described as being in a critical condition with life-threatening injuries.
A spokesperson for the West Midlands Police also confirmed that 51 year old man has been arrested in connection with the murder.
An uncle has been charged with the murder of his 11-year-old niece.
"This is a hugely tragic time for our family and the loss we feel is unexplainable", he said.
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A post-mortem examination was expected to be held today.
"Jasmine was a shining star and a huge part of us", he added.
'We are not seeking anyone else in relation to this incident, but if anyone has information please get in contact with us'. "We would really like to be left alone at this time while we come to terms with what has happened".
The house remains cordoned off while a forensics team continues their investigation.
A woman in her 80s also suffered a dislocated shoulder during the incident in Kent Road and was treated in hospital.
Emergency services in Wolverhampton were called by a concerned neighbour just before 1am on Friday following reports of a disturbance.