A seven-month-old girl was allegedly killed by her grandmother who sliced her throat with a circular saw when she would n't stop crying . Officers found the child , identified by family members as Rose Herrera , after being called on Monday morning to a family home on the city 's West Side . Police said the 52-year-old relative used a power saw to cut the baby 's throat to stop the infant from crying . Cause of death was confirmed on Tuesday by the Cook County Medical Examiner as blunt force injuries to the head and probable suffocation from a sock placed in the child 's mouth . Scroll down for video . Police were called to this home in the 2800 block of South Avers Avenue in the Little Village section of Chicago , where they discovered the lifeless body of the infant with her throat cut . The death was declared a homicide , the medical examiner 's office said on Tuesday . Speaking on condition of anonymity , the official said the woman is in police custody at a hospital with self-inflicted wounds . Police said both the baby and the woman were found by another relative . Illinois Department of Children and Family Services officials said the agency had no prior contact with the family . Authorities said no other children were present in the home at the time of the incident . Ben Llamas works with the child 's father and drove him to the scene . Mr Llamas told the Chicago Tribune the father was upset but did not talk about what happened . His friend had moved in to that house about a year ago with a woman , Llamas said . The couple had a young child . ‘ At first , he was reluctant , but when the baby came , he fell in love , ’ Llamas said . ‘ He shows us pictures of that baby every day. ’ Neighbors said several people live in the home where the baby was found . ‘ They were really good people , ’ Francisco Arreola told the Chicago Tribune in Spanish . ‘ I would always see them and they were very happy . I never heard them fight or anything. ’ Police were called at around 9.40am to a multi-family home in the 2800 block of South Avers Avenue in the Little Village section of Chicago , where they discovered the lifeless body of the infant with 'visible trauma ' . The child was pronounced dead at the scene . Sources have identified the little girl as Rosie Herrera and told ABC 7 Chicago the 52-year-old woman who allegedly cut her throat may have been her grandmother . Investigators said before the suspect took a circular saw to the child 's body , she tried to quiet her down by stuffing something down her throat . Following the killing , the 52-year-old reportedly attempted to take her own life . She was rushed to Mount Sinai Hospital in a stable condition . Tragedy : Police say the child 's killer tried to stuff something down the child 's throat to make her stop crying before using the saw .
The baby , identified by neighbors as Rosie Herrera , was found by police with her throat cut inside Chicago home . Her 52-year-old grandmother was taken to a hospital with self-inflicted injuries after she tried to take her own life . Police said the woman tried to stuff something down the child 's throat to make her stop crying before using the saw .