Freddy Snyder has pleaded not guilty to murdering Caltech astrophysicist Carl Grillmair in Llano. - Snyder, 30, is charged with murder, carjacking, and burglary.
- He allegedly carjacked his mother at gunpoint hours before the shooting. - Grillmair was shot once in the neck on his front porch.
- If convicted, Snyder faces life in prison; a preliminary hearing is set for June 5. The case remains under investigation by the Los Angeles County Sheriff's Department.