CHICAGO (WLS) -- Chicago police are investigating the death of a mother and a 1-year-old baby on the city's South Side.
Police said they were called to a home in the 2400-block of W. 80th Street at about 3:02 a.m. on Tuesday.
A witness said they found a 25-year-old woman unresponsive in a backyard. Police said she died at the scene.
A Chicago firefighter saw that the door of the home was open - EMS found a 1-year-old baby unresponsive inside.
The baby also died at the scene.
The woman was identified as Kendrea Richardson and the baby boy was identified as Ellis Washington, according to the Cook County Medical Examiner's Office.
Kylen Washington, the father of baby Ellis, spoke with ABC7. He said baby Ellis turned one in April and described him as a happy and lively baby.
Chicago police said they are treating this as a death investigation,
Officials have not revealed how either died.