Idaho In-N-Out: police say gunman Chad Williams died by suicide; bystanders credited

Sunday, August 2, 2026Confirmed

U.S. Desk

What we know

At a Sunday news conference, Twin Falls Police Chief Matthew Hicks said the suspect in Saturday’s mass shooting at a newly opened In-N-Out Burger died of a self-inflicted gunshot wound and was identified as 24-year-old Chad Williams. Hicks said investigators were confident Williams acted alone. Three other people were killed and seven wounded; Sunday’s injury update listed two released, three stable, and two critical. In-N-Out owner Lynsi Snyder said an employee was among the dead; victim names had not yet been released pending next-of-kin notification.

Hicks credited an off-duty Idaho State Police trooper and an armed citizen—identities not disclosed Sunday—with returning fire that helped drive the suspect from the restaurant and prevent further casualties. Witnesses described chaos around the drive-thru and plaza; the FBI asked the public to submit photos, video, and audio. Detectives were still seeking a motive; Williams’s family was cooperating. Hicks also warned against online misidentification of an unrelated person as the shooter.

What's confirmed

Aug. 1 Twin Falls In-N-Out: 3 killed, 7 wounded; gunman Chad Williams, 24, died by suicide; police: acted alone (AP; NBC News).
Hicks Sunday: off-duty state trooper + armed citizen return fire helped drive suspect away / prevent further casualties; IDs not released (AP; NBC).
Injury status Sunday: 2 released, 3 stable, 2 critical; In-N-Out employee among dead per Snyder; motive under investigation; family cooperating (AP; ABC News).
FBI tip line for public images/video; restaurant had opened ~July 24 (AP).

What's still developing

Official naming of victims and of the off-duty trooper and civilian who returned fire.
Any stated motive and fuller timeline of the multi-location response.

Sources

AP News — Aug. 2: Williams suicide; acted alone; Hicks praise for off-duty officer and citizen; injury breakdown; Snyder employee statement; FBI tips link
NBC News — Aug. 2: armed bystander distracted gunman; Hicks briefing; Williams ID; critical wounded; FBI tip line link
ABC News — What we know about suspect; motive under investigation; College of Southern Idaho background; FBI assistance link