New charges have been filed against a 17-year-old suspect accused of a fatal La Crosse shooting. W-K-B-T/T-V reports an arrest warrant has been issued for Jackson Greengrass who is now charged with attempted first-degree intentional homicide as a party to a crime. Investigators say Greengrass was driving the vehicle May 22nd when passenger Storm Vondrashek was shot to death. Greengrass was also shot. Authorities say 18-year-old Sage Hicke was the shooter. Hicke has turned himself in to La Crosse police.