Her death was ruled a homicide on Thursday after an autopsy.
The girl's body was found at 2 p.m. Wednesday when emergency crews were called to a home in the 17900-block of Wildwood Avenue in south suburban Lansing for a medical emergency, according to a release. They found Jakarriah unresponsive, according to the Cook County Medical Examiner's Office, and she was pronounced dead at the scene at 2:31 p.m.
Illinois State Police and the Lansing Police Department are both involved in the investigation. Officials said they are speaking to family members, but no one has been charged in Jakarriah's death.
As detectives gathered evidence, neighbors looked on.
"This is shocking, very shocking, because this is a peaceful block. Everybody knows each other," said Laura Velasquez, neighbor. "We have block parties every year. Everybody comes out and has a nice time together all during the summer. This is sad, really sad."
"There's no problems, none, none, none, none. That's why I'm raising my family here," said Dora Jablonski, neighbor.
