Sheriff expects more arrests in Orinda Halloween party killings

Five suspects arrested are Jason Iles, Shamron Mitchell, Devin Williamson, Lebraun Wallace and Jaquez Deshawn Sweeney. Photos by CoCoSheriff.

Shootings were result of rival gangs

By Daniel Borsuk

More arrests are expected to be made in connection with the Orinda Airbnb case where five people were shot and killed on Halloween night, Contra Costa County Sheriff David O. Livingston said at a press conference Friday afternoon.

Unable to provide further details, the sheriff said that five suspects had been arrested on Friday in connection with the Orinda shootings on Friday that had ties with two Bay Area gangs – the Page Street Gang of San Francisco and the Marin City Jungle Gang of Marin City.

Sheriff Livingston said he expects any additional persons arrested in the Orinda Airbnb case will likely have gang affiliations. He would not elaborate.

The five suspects under arrest are identified as:

  • Shamron Mitchell, 30, of Antioch. Mitchell was arrested on the charges of murder and conspiracy. He is being held without bail.
  • Lebraun Wallace, 28, of San Mateo. Wallace was arrested on the charges of murder and conspiracy. He is being held without bail.
  • Jaquez Deshawn Sweeney, 20, of Marin City. Sweeney was arrested on the charges of murder and conspiracy. He is being held without bail.
  • Jason Iles, 20, of Marin City. Iles was arrested on the charges of murder and conspiracy. He is being held without bail.
  • Devin Williamson, 21, of Vallejo. Williamson was arrested on the the charges of being an accessory. He is being held in lieu of $500,000 bail.

“Extraordinary cooperation among multiple law enforcement agencies led to these arrests and a small measure of justice for the true victims,” said Sheriff Livingston.

“We have video showing a number of people at the party had carried firearms and secreted their firearms in their pants once the shooting spree in the house had subsided,” the sheriff said.

Four firearms were recovered by law enforcement authorities at the crime scene, Sheriff Livingston said.

“We believe people at the party had intent to do harm at this party,” the sheriff said in reference to potential connections with other gangs in the Bay Area. “Additionally, evidence shows two of the deceased persons inside the house were themselves armed, which may have played a role in this tragedy,”

Those victims, who had possessed weapons, were Ramon Hill Jr., 24, of San Francisco/Oakland and Javin County, 29, of Sausalito/Richmond.

Other murder victims were Tiyon Farley, 22, of Antioch; Omar Taylor, 24, of Pittsburg; and Oshiana Tompkins, 19, of Vallejo/Hercules, according to the sheriff’s office. Five additional victims suffered gunshot wounds. One person jumped 30 feet over a balcony to escape the gunfire, said deputies.

“The blame rests specifically on the people who brought guns into the party, pulled the trigger and murdered someone. That’s who should have the blame in this case,” said the sheriff.

The sheriff said neither the Orinda police, the homeowner, nor Airbnb deserve blame in this case.

In the aftermath of the crime, Orinda Mayor Inga Miller said the city council is expected to consider tougher home rental ordinance proposals that would apply to Airb&b at Tuesday’s council meeting. “I want to thank the Contra Costa County Sheriffs Office and other local law enforcement agencies for the resources they have deployed into resolving this heinous crime,” said Miller

The Antioch Police Department, San Mateo Police Department, Vallejo Police Department, Marin County Sheriff’s Office, U.S. Marshalls Service, Bureau of Alcohol, Tobacco, Firearms and Explosives and Federal Bureau of Investigation assisted in the Contra Costa County Office of the Sheriff in this case.

Persons with any information is asked to contact the Sheriff’s Office Investigation Division at (925) 313-2600. For any tips, please email: or call (866) 846-3592 to leave an anonymous voice message.

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