Dolton police say they are closing in on the killer of a pregnant teenager.
17-year-old Eva Casara of Calumet City was found Christmas Day with a gun shot wound to the back of the head between two condo buildings in suburban Dolton. Casara was 5 months pregnant.
Police found Casara alive and she survived long enough for doctors to deliver a baby girl but died shortly after.
The family named the baby, Lealani Paris Casara. She is in critical condition at the hospital in Oak Lawn.
Police say they are using social media detective work and surveillance video to track the killer down.
Friday afternoon, the Dolton Police Chief said he expected an arrest in the next 24 hours.