Alameda County District Attorney's Office
Nancy E. O'Malley, District Attorney

Meet DA Nancy E. O'Malley


Murder Charges Filed in Slaying of Hayward Police Officer Jul 24, 2015

OAKLAND, CA – Alameda County District Attorney Nancy E. O’Malley announced her office has formally filed murder charges against Mark Anthony Estrada, 21, for the July 22 killing of Hayward Police Department Sergeant Scott Lunger. The complaint filed in the Alameda County Superior Court today charges Estrada with first degree murder with special circumstances. The three special circumstances are murder of a peace officer, lying in wait, and discharging a firearm from a motor vehicle.

On July 22, just after 3am, Sergeant Lunger pulled over a white pickup truck driving erratically. He approached the vehicle to speak with the driver. Without warning or provocation, defendant Estrada opened fire on Sergeant Lunger. A second Hayward Police officer who had also responded to the scene returned fire, striking Estrada. Defendant Estrada fled the scene and his vehicle was found discarded at 98th Avenue in Oakland. Sergeant Lunger died of his injuries at Eden Medical Center in Castro Valley a short time later.

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People v Marchell Ernest Mitchell Jul 21, 2015

On July 21, 2015, a jury convicted Marchell Ernest Mitchell of a felony assault likely to produce great bodily injury, and misdemeanor battery.

On March 19, 2014, defendant Mitchell was working as a school security officer at Oakland High School. He assaulted victim Francisco Martinez, a 17-year-old student who was wheelchair-bound due to cerebral palsy.

After a confrontation where defendant Mitchell restrained the victim using handcuffs, the victim challenged defendant Mitchell about the event. The victim spat at defendant Mitchell as the defendant pushed his wheelchair. Defendant Mitchell subsequently punched the victim three times in the face, threw him out of his wheelchair. As the victim lay handcuffed on the ground, defendant Mitchell struck him again, then picked him up and and dropped him back to the ground.

The case was prosecuted by DDA Gemma Daggs with assistance from DA Inspectors Blair Alexander and Timothy Cleary, and Victim-Witness Advocate Yuen Chiang.

’Did You Know...?’ - Issue 4, 2015 Jul 20, 2015

In the fourth installment of our 'Did You Know' newsletter for the year, you will find:

  • The Family Justice Center celebrates 10 years serving victims of crime
  • DA O'Malley announces investigation into the Berkeley Balcony Collapse
  • DA team carries Flame of Hope for Special Olympics
  • Felony verdicts
  • And watch a short film of the ACFJC's 10th Anniversary celebrations!

L - R: Alameda County Supervisor Keith Carson, ACFJC Executive Director Cherri Allison, Alameda County District Attorney Nancy O'Malley, BAWAR Executive Director Marcia Blackstock, and Alameda County Administrator Susan Muranishi.

Read these stories and more in our newsletter.

Our Family Justice Center Celebrates a Decade Serving Victims Jul 17, 2015

On June 30, 2015, the Alameda County Family Justice Center (ACFJC) celebrated ten years helping victims of crime in Alameda County by hosting an Open House for the community. Hundreds of people came out in support of the positive role the Center has played in our community and they enjoyed a BBQ lunch and guided tours of the facilities.

The founder of the ACFJC, Alameda County District Attorney Nancy O’Malley, spoke of the inspiration behind establishing the center. “Back in 2003, I performed a needs assessment of the services available to, for example, a female victim of domestic violence with two children in Alameda County. I found that she would potentially need to visit over 25 different sites to access all the services that she required for herself and her family,” DA O’Malley said.

“This status quo was further victimizing these victims. So I decided to change this by establishing a center that housed an abundance of allied health, legal, psychological and other support services in one, easily accessed location. And in 2005, the Alameda County Family Justice Center became a reality, making it much easier for victims of crime to seek the help they need,” said DA O’Malley.

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People v Christian Birdsall-Hernandez Jul 14, 2015

On July 14, 2015, a jury convicted Christian Birdsall-Hernandez of the first degree murder of 58-year-old Barbara Latiolais and found true special circumstances that Birdsall committed the murder while lying in wait, committing burglary, and committing robbery. The jury additionally convicted Birdsall of arson.

On October 17, 2012, Birdsall waited outside the victim’s Castro Valley home for nearly 7 hours before crawling underneath the home and devising a plan to choke the victim to death by surprise. Birdsall knew the victim would be home alone as he had performed house-work for the victim which is how he was familiar with the home and the valuables inside.

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People v Daniela Guzman Jul 10, 2015

On June 30, 2015, a jury found defendant Daniela Guzman guilty of second degree murder and conspiracy to commit assault, along with gang enhancements for both charges. Previously, defendant Guzman’s brother, Rafael Tovar, and friend Daniel Lloyd Howard were convicted of murder for their role in this crime.

In September 2010, defendant Guzman invited victim Justice Afoa and his friend Anthony to a party at her family home. Defendant Guzman had previously dated Anthony, but the relationship ended poorly and Guzman’s brother (Rafael Tovar) was angry at Anthony. A fight ensued and Tovar was badly beaten. Over the next few months, Tovar conspired to murder the victim.

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People v Karl George Sanft Jul 7, 2015

On June 30, 2015, the Honorable Judge Joseph Hurley found defendant Karl George Sanft guilty of two counts of first degree murder and the special circumstances of multiple murder and robbery to be true. Judge Hurley further found the defendant to be sane at the time of the commission of the crimes.

Shortly after 3AM on February 2, 2010, defendant Sanft was under the influence of methamphetamine and violently robbed the Manheim Auto Auction in Hayward by ramming the gate. Unarmed security guard Angelito Erasquin fled in fear but defendant Sanft chased him down and stabbed him 28 times, killing him. Defendant Sanft then stole the victim's phone, watch, and wallet before and stealing a car from the Auction's lot.

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People v Jahton Green Jun 30, 2015

On June 23, 2015, a jury found defendant Jahton Green guilty of two counts of robbery, with an enhancement for inflicting Great Bodily Injury, and one count of elder abuse.

On August 22, 2013, defendant Green brutally beat two elderly men in separate robberies. Both victims were walking alone on the street in Berkeley when defendant Green, without any warning, physically assaulted them with his hands and fists, before taking their property and fleeing the scene.

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People v Paul Booker Jun 30, 2015

On June 22, 2015, a jury found defendant Paul Booker guilty of second degree murder with an enhancement for the personal and intentional discharge of a firearm causing death.

On July 9, 2013, defendant Booker was socializing with a group of friends on the front lawn at a home on 88th Ave in Oakland. Victim Steven Cotton walked by the home and noticed defendant Booker, with whom he had a previous issue.

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People v Christopher Edward Moss Jun 26, 2015

On June 17, 2015, a jury convicted Christopher Edward Moss of kidnapping for the purposes of robbery and rape, and a series of robberies, burglaries, and sexual assaults, along with firearm enhancements.

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