Authorities in California have announced an arrest in the death of federal defense investigator Sandra Coke. 

56-year-old, convicted sex offender, Randy Alana, who once dated Coke, was booked into Santa Rita Jail Thursday on suspicion of murder. 

The 50-year-old Coke was seen with Alana after she vanished from her North Oakland home on Aug. 4. 

Her body was found five days later. Alameda County prosecutors could file charges against Alana as soon as Friday.