Authorities in Chico, California, say an 18-year-old suspect walked through a public library, went back to his vehicle, retrieved a shotgun and then fatally shot two people on Sunday, June 22. For Chattanooga readers, the case matters as a clear example of how a city police department, county investigators, emergency managers, federal agents and prosecutors divide roles after a public attack.

The Chico Police Department identified the suspect as Bradley Scott Sayer. The Butte County District Attorney says he now faces two counts of first-degree murder. As of Tuesday, June 24, officials had confirmed the deaths of two victims but had not publicly released a full motive, according to police and prosecutors.

What authorities say happened at the Chico library

According to the Butte County District Attorney's Office, investigators believe Sayer first entered the Chico library and conducted a walk-through of the building. Prosecutors said he then returned to his vehicle, got a shotgun and came back to the library.

The district attorney's office said one victim was shot at the library's main entrance and a second victim was shot inside the building. Chico police and the Butte County Sheriff's Office said officers responded to the library shooting on Sunday and took the suspect into custody.

The Butte County District Attorney's Office said the suspect "did a walk-through of the building" before returning with a shotgun and killing two people.

The Butte County Office of Emergency Management issued a safety and closure notice after the shooting. That meant immediate disruption for library users, nearby residents and families relying on weekend public services in Chico.

Why this response structure may matter to Chattanooga readers

For local readers in Chattanooga, the case shows how multiple agencies handle different parts of one fast-moving investigation. City police manage the first response and public statements, sheriff's investigators assist with custody and case work, prosecutors file charges, emergency management handles public safety notices and the FBI provides investigative support.

That division of work is similar to the way large violent-crime investigations are often organized elsewhere in the United States. Readers who want to understand how this newsroom handles verified sourcing can review our Source Transparency and Editorial Policy.

  • Chico Police Department: identified the suspect and issued initial public statements.
  • Butte County Sheriff's Office: provided investigation updates and arrest information.
  • Butte County District Attorney: announced the murder case and formal charges.
  • FBI Sacramento: said the bureau is assisting in the investigation.
  • Butte County Office of Emergency Management: issued the closure and safety alert.

Confirmed charges, and what remains unknown

The Butte County District Attorney's case page lists two counts of first-degree murder against Sayer. Chico police also published a suspect identification notice and mugshot following the arrest.

As of Tuesday, June 24, authorities had not publicly disclosed a full motive. Officials also had not, in the source materials provided, publicly outlined any additional charges beyond the two murder counts.

Facts confirmed by official agencies

  • The shooting happened at a library in Chico, a city in Butte County in Northern California.
  • Two people were killed.
  • The suspect was identified by Chico police as Bradley Scott Sayer, 18.
  • The district attorney says the suspect is charged with two counts of first-degree murder.
  • The FBI said it is assisting the local investigation.

What officials have not yet publicly confirmed

  • A full motive for the shootings.
  • Whether prosecutors will add further charges.
  • Any broader timeline beyond the walk-through, return to the vehicle and shootings described by the district attorney.

What residents can do next

People in Chico seeking updates on library access or local safety notices should check the Butte County Office of Emergency Management and Chico Police Department. Court status and filed charges are being posted by the Butte County District Attorney.

For Chattanooga readers following coverage standards or wanting to raise a correction, tip or question, use our Contact Us page.

Primary sources: Chico Police Department, Federal Bureau of Investigation (FBI), Butte County Office of Emergency Management, Chico Police Department, Federal Bureau of Investigation (FBI). Reported by Source Text Link, Butte County District Attorney's Office, Butte County Sheriff's Office, Chico Police Department, Butte County District Attorney, Chattanooga Times Free Press.