The reward has grown to $8,000 as authorities in northern Nevada continue their search for a teenage suspect they believe was involved in a fatal shooting at a park in Spanish Springs in December. The Washoe County Sheriff’s office identified 18-year-old Giovanni Gonzales-Mariscal of Sun Valley as a suspect earlier this month in the Dec. 2 death of 20-year-old Robert Decoite Jr. of Sparks.