Press Releases

District Attorney Brooke Jenkins Announces Jules Sibilio Convicted of Second-Degree Murder

A jury convicted Jules Sibilio for killing his long-time partner Mary Atchison with his bare hands

San Francisco, CA – Today, San Francisco District Attorney Brooke Jenkins announced that her office secured a second-degree murder conviction of Jules Sibilio (56) after trial by jury.  Sibilio killed Mary Atchison in the home they shared in Bernal Heights after years of verbal, emotional and physical abuse.  She was found dead at the age of 42 with 57 distinct blunt force injuries when medics arrived the morning of August 26, 2014.    

“Mary Atchison did not have to die at the hands of her abuser,” said District Attorney Brooke Jenkins.  “Although, this verdict delivers justice for Ms. Atchison’s family and sends a strong message that abusers will be held accountable and face consequences for their brutality, there are more people suffering behind closed doors.  As a community, we need to do everything we can to offer help and ways out before any more tragedies happen.”

The case against Sibilio was successfully prosecuted by Assistant District Attorney Justine Cephus with assistance from paralegals Jessica Diamond and Tony Yu as well as intern Hannah Attar.  Victim Advocates Jovan Thomas, Maria Reynoso, and Samantha Greenhalgh worked closely with the victim’s family throughout the case.  Prosecutors were able to develop a strong case against Sibilio based on the careful investigation work performed by the San Francisco Police Department’s Homicide investigators.

“Ms. Atchison suffered years of abuse prior to her murder,” said Justine Cephus, Assistant District Attorney.  “While the verdict cannot bring her back, it does hold the defendant accountable. After 8 long years, I hope this verdict brings Ms. Atchison’s family some closure.  I sincerely thank the jury for their hard work in this case, and I am thankful for the unwavering support of Ms. Atchison’s family and friends.”      

Sibilio has been in custody since his arrest on August 26, 2014.  Sentencing will be determined at a future court date, which has not been set. 

If you or a loved one is in need of support please seek help.  In an emergency call 9-1-1 for help. 

Below are some resources for people experiencing domestic violence.

  • National Domestic Violence Hotline (text) START to 88788 or call 800.799.7233
  • WOMAN, Inc 24/7 Support Line, 877.384.3578
  • Asian Women’s Shelter 24/7 crisis line, 877.751.0880
  • La Casa De Las Madres Crisis text, 415.200.3575

Additional resources throughout California are available on the California Partnership to End Domestic Violence website:

Court Number: 14022755