HPD said the man was seen walking north of Crawford Street near the garage where the 53-year-old man was found in the backseat.
Investigators said the unidentified body was wrapped in a black blanket, duct taped, then wrapped in a red sheet.
Dana McGowan was last seen on July 5, but residents have reported seeing her recently in the area of 10300 S. Wilcrest, according to police.
Detectives said CPS has made contact with the child's father, but now they're working to get in touch with the mother.
While the relative identified the child, investigators said they still haven't been able to find his mom or dad.
Constable Mark Herman asks the public to avoid the area after a man was found unresponsive.