Sean Matthew Walker, 36, of Rocklin has been arrested in connection with the crash Friday on westbound Interstate 80 in Fairfield. Walker was behind the wheel of a Chevrolet pickup truck that killed CHP Officer Kirk Griess, 49, and motorist Jaime Bueza Manuel, 46, during a traffic stop near Manuel Campos Parkway. CHP officials said Walker was using his cell phone at the time of the accident and he was also speeding. Walker will be charged with two counts of vehicular manslaughter. He could face 8 years in prison if convicted.
