(KMOV) -- The St. Clair County Sheriff's Department have released more information about a baby who died after being found in a car Wednesday.
By Friday, we should know if anyone in the family will be charged in the dealth of the 1-year-old girl.
One-year-old Giselle Gomez, of Collinsville, was found unattended in a vehicle in the 2900 block of South Belt West in Belleville.
During a news conference Thursday afternoon, St. Clair County Chief Investigator Steve Johnson said the child was left in the vehicle between 75 and 90 minutes.
Police say a family member left Gomez and a 2 year old sibling in the car when the family member was inside an insurance agency ran by a member of the extended family.
At some point, the toddler got out of the car, went inside and was okay. By the time the relative got back to the baby, authorities say she was in cardiac arrest.
A person from a nearby business called 911 and administered CPR to Gomez. Chief Johnson said Gomez was rushed to a Belleville hospital after suffering cardiac arrest and was covered in "heat blisters" from "head to toe."
Preliminary results from an autopsy indicate Gomez died from hyperthermia from extreme heat.
Chief Johnson said it's possible the car's air conditioner was on when the adult went in the building and perhaps the toddler played with the nobs and turned on the heat before going inside.
Chief Johnson said a family member has been taken into custody but charges have not been filed. The St. Clair County's attorney's office will review the caseFriday morning.
The 2 year old sibling has been taken into protective custody by the state.