The St. Louis Police Department will take part in an investigation into who killed Ebony Jackson, the mother of a baby found early Friday morning in Breckenridge Hills.
Jackson's body was in the trunk of her car Tuesday, which was located in St. Louis.
The St. Louis Post-Dispatch reports that an autopsy performed Wednesday revealed that Jackson was shot in the head.
The 30-year-old and her three month old son had traveled from Oklahoma City to visit family, but relatives had not heard from her since Thursday. Family friend Linda Lawson says Jackson was her mother's only child.
"Lives have been decimated," said Lawson. "There's no other word for it. You have a son that doesn't have a mother; a mother that doesn't have her only child. You can't think of a worse circumstance."
The St. Louis police and Breckenridge Hills police say they will work together to investigate Jackson's murder.
They're urging anyone with information regarding Jackson should call Crimestoppers.