ST. LOUIS - St. Louis Police released new information in the case of a metro mother whose body was found Tuesday. Now investigators say Ebony Jackson died from an apparent gunshot wound to the head.

Police found the body of 30-year-old Ebony Jackson in the trunk of her car yesterday in a St. Louis neighborhood. Authorities had been looking for Jackson since her little boy was found abandoned at an apartment complex there last week. Now, investigators are searching for answers in her death.

Authorities say blunt-force trauma was detected when Jackson's body was found Tuesday. 

"Ms. Jackson was last heard from by family," St. Louis Capt. Michael Sack said. "After that she went missing."

The search for Jackson started Friday when her 3-month-old son was found abandoned at a St. Louis apartment complex. Someone who lived at the apartments found the baby and called police.

Jackson's family told investigators she lived in Oklahoma City with the child's father, but was going to East St. Louis to visit. Police say the child's father, Craig Prom, went to St. Louis and spoke with investigators Saturday.

On Tuesday, officers found Jackson's car with a GPS tracking device. That's when police found Jackson's decomposed body inside the trunk.

"We're currently following up on a number of leads at this time," Capt. Sack said.

Jackson's baby, Donavon Prom, is in state custody in Missouri. Investigators there have ordered a paternity test, but News 9 is told those results won't be available until at least Thursday.

At that point, a judge will decide where to place the child. Jackson's body is now at the St. Louis County Medical Examiner's office for an autopsy.