PHOENIX - A Phoenix man has been sentenced to 22 years in prison in the death of his girlfriend's young daughter.
Maricopa County prosecutors say 19-year-old Martwane Mackey will be on lifetime probation with domestic violence and mental health terms after serving his prison term.
Mackey pleaded guilty in November to second-degree murder and child abuse in the death of 3-year-old Tyshea Austin. He was sentenced Thursday.
Phoenix police say Mackey called 911 around 2 a.m. on June 25, 2011 and claimed the girl wasn't breathing.
Responding officers reported seeing bite marks and injuries to her head and torso and said she appeared to have been dead for some time.
Investigators found similar injuries to Tyshea's 1-year-old sister.
Police say Mackey admitted to abusing the girls, but denied causing Tyshea's death.
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