Nikolas Cruz, 19, has already been charged with 17 counts of murder in the shootings at Marjory Stoneman Douglas High School. Public defenders had sought to avoid a trial by having Cruz plead guilty.
"Nikolas Cruz"
Grand jury formally indicts alleged Parkland school shooter on 34 counts
If 19-year-old Nikolas Cruz is convicted of first-degree murder, prosecutors could seek the death penalty.