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Rocklin man charged with killing two posts bail at $90,000

By: Brody Fernandez Of Gold Country Media
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Sean Matthew Walker, a Rocklin man arrested for vehicular manslaughter on two counts in Fairfield, posted bail at $90,000 on Aug. 16, according to law enforcement officials.  

A California Highway Patrol (CHP) officer and another person were killed Aug. 10 on the side of Interstate I-80 in Fairfield, according to law enforcement officials.

Walker was responsible for the deaths and charged with two felony counts, according to Solano County District Attorney’s Office spokeswoman Monica Martinez.

“Sean Matthew Walker, 36, of Rocklin has been charged with two felony counts of gross vehicular manslaughter in violation of Penal Section 192(c)(1),” according to a Solano County District Attorney’s Office Aug. 16 press release.

The press release said that defendant Walker was traveling at a high rate of speed on the shoulder of Interstate 80 while accessing his cellular telephone Aug. 10 “when he violently struck California Highway Patrol Officer Kirk Griess and Vallejo resident Jaime Manuel. Unfortunately, both CHP Officer Kirk Griess and Jaime Manuel succumbed to their injuries.”

On Aug. 15, Walker was arrested and booked on the charges. He is scheduled to appear at 8:30 a.m. Sept. 12 for arraignment at the Solano County Superior Court in Fairfield.

“This is a sad day for the California Highway Patrol,” CHP Commissioner Warren Stanley told reporters Aug. 15 via at a press conference. “Officer Griess will be dearly missed by members of the CHP and his family. We will mourn and we will miss Officer Griess.”

CHPl Golden Gate division Commander Chief Ernie Sanchez also spoke at the press conference.

“He loved his job, he was a military veteran and he served his country. He served the people of California for 19 years as an officer and the people of Solano County for 16 years,” Sanchez said. “This is a very difficult one for me. He was a friend.”

When asked if alcohol, marijuana or a controlled substance played a role, Sanchez said they are “looking at all avenues.”

Gold Country Media asked CHP Golden Gate Division Officer Custodio Lopez for an update Tuesday.

“We have no comment at this point,” Lopez said. “We don’t have anything else right now because this is an ongoing investigation.”  

Griess is survived by his wife, 14-year-old son, 21-year-old daughter and  25-year-old daughter, all Solano County residents.