A California state senator has filed a motion in federal court, requesting access to sealed documents in regard to missing persons records in the “Speed Freak Killers” case.

Sen. Cathleen Galgiani, D-Stockton, said in a news release that it has come to her attention that missing persons records from the “Speed Freak Killers” case were deleted by the San Joaquin County Sheriff’s Office.

Galgiani said that by getting the documents unsealed, she hopes to find out why other victims’ remains haven’t been recovered.

Attorney Mark Geragos filed the motion on Galgiani’s behalf.

“I am determined to find out the truth behind the deleted missing persons record,” Galgiani said. “I have always believed that the role of law enforcement is to protect and serve, not to remove and destroy evidence.”

Remains found nearly three years ago in rural San Joaquin County near the city of Linden are believed to be victims of Loren Herzog and Wesley Shermantine.

The FBI came in and took over the search for other possible victims’ remains after the San Joaquin County Sheriff’s Department was criticized for its handling of the operation.

Herzog and Shermantine were dubbed the “Speed Freak Killers,” because authorities said they were high on methamphetamine during their killing spree in the ’80s and ’90s.

San Joaquin County Sheriff Steve Moore denied the accusations by Galgiani that files related to the case were deleted.

“No files related to ‘Speed Freak Killers’ case were ever deleted by the San Joaquin County Sheriff Office,” Moore said in a statement issued Monday. “A number of cold case files were transferred to Department of Justice for a period of time for management and oversight only.”

Galgiani also accuses the San Joaquin County Sheriff’s Department of not assisting detectives from the Reno Police Department and Hayward Police Department during their investigation of cases that may be connected to the “Speed Freak Killers.”

One detective was even told to stop investigating his case, according to the state senator.