Family believes the mother of Alexis Gabe's suspected killer knows where body is

Family and friends of Alexis Gabe held a protest Friday morning outside the Contra Costa County District Attorney's Office. 

Authorities believe the missing 24-year-old Oakley woman was killed by her ex-boyfriend in January, although her body was never found.

The protest group says they believe the suspect's mother knows where Gabe's body was dumped and want her to be charged with abetting the crime.

Dozens of protesters chanted, "Do your job" while holding signs, calling for justice in Gabe's death.

The district attorney declined to file charges against her in May.