Walker County Sheriff's Detective Burt Cagle said investigators still don't know why a LaFayette man strangled to death his pregnant girlfriend.
Cagle emphasize that the case is still under investigation.
Often times, details on motive in a murder case don't surface until the suspect goes to trial or pleads guilty.
David Ryan Walker, 29, was charged Jan. 15 with the murder of 29-year-old Candace Hankins. The couple lived at 956 Wheeler Road.
Walker has also been charged with feticide because Hankins was pregnant. A close friends has said that Hankins told family and friends she was four months pregnant with Walker's baby.
Cagle said blood samples, which are used in part to check for the presence of alcohol and drugs, were taken from Walker and Hankins. Results from the blood samples, which are standard procedure in such cases, could take about two months to return, Cagle said.