Investigators say they have found evidence that a toddler suffered a serious head injury two days before his stepfather reported him missing in 2002 from a San Diego playground.

In an affidavit for an arrest warrant unsealed Thursday, investigators say Tieray Jones wrote in a notebook to his Navy wife who was deployed at the time that 2-year-old Jahi Turner was not moving or talking after falling off a bed.

The journal entry was dated April 23, 2002, two days before Tieray Jones called 911 to report the boy was missing.

Jones was arrested in North Carolina last month and charged with homicide. The boy has never been found. Jones has pleaded not guilty to homicide.