WACO, Texas -- A Texas prosecutor plans to recommend dismissing around 100 of the more than 120 remaining biker cases stemming from a 2015 shooting outside a Waco restaurant.

McLennan County prosecutor Amanda Dillon said during a court appearance Friday that the district attorney's office is continuing to pare down its caseload to focus on those most culpable for the police-involved shooting that left nine bikers dead and 20 injured.

Spokeswoman Rebecca Akins says District Attorney Abel Reyna hasn't decided how many cases to try.

One biker has been tried in the almost three years since the shooting, and it resulted in a mistrial. More than 175 bikers were originally arrested, with 154 eventually indicted. 

Reyna had said he was awaiting discovery from a federal racketeering trial in San Antonio.