An autopsy report released Wednesday concludes Kelsey Smith-Briggs, 2, was a homicide victim, suffering "blunt force trauma to the abdomen, genital area, head, torso and extremities.
Kelsey probably died from the injuries to her abdomen, Dr. Inas Yacoub, a deputy state medical examiner, wrote.
The medical evidence, however, did not establish whether she was molested, too, the medical examiner's chief investigator said.
"We're not saying it's sexual assault. We're not saying it's not, chief investigator Kevin Rowland said of the injuries to the genital area. "Blunt force trauma can be caused by many different things. We're just reporting it's there. It can be caused by a kick, a punch, a fall, lots of things.
Kelsey is the Meeker girl whose death has attracted widespread attention.
Her stepfather, Michael Lee Porter, 25, is charged with first-degree murder. Her pregnant mother, Raye Dawn Porter, 26, is under investigation. Each denies responsibility.
Prosecutors allege Mike Porter struck Kelsey in the abdomen Oct. 11 at their home near Meeker. The defendant has suggested to others that his wife injured Kelsey, leaving him alone in the house with the child to take the blame.
Kelsey died Oct. 11, four months after a judge returned her to her mother's care, despite allegations the mother was abusive.
In the months before her death, Kelsey suffered a broken collarbone, fractured legs and multiple bruises.