Campus Alert Archive
Delta College

A Threat Relayed Through Stockton PD Emptied the Main Campus

CAbomb threatemergency notificationmedium confidence
UnfoundedNo evidence of an actual threat was found. The institutional response is documented because the alert communication is identical to what would occur during a real incident.

On the afternoon of July 6, 2022, San Joaquin Delta College district police received a report, relayed from the Stockton Police Department around 3 p.m., that a bomb had been placed on the Stockton main campus. The college sent a MustangAlert and evacuated the campus while officers searched. Nothing was found, and an all-clear was given at 5:02 p.m.; the threat was deemed unfounded.

Alerts
2
Response
—
Killed
—
Injured
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Institution
San Joaquin Delta College
Community College · CA
~17,000 studentsMustangAlert
Confirmed Timeline

Alert Sequence

2 messages in sequence · 1 verified verbatim

Some alert texts below are approximate reconstructions from news coverage, not confirmed verbatim transcripts. Reconstructed texts are shown in italic with a dashed border. Verified verbatim texts have a solid border and are marked accordingly.

INITIAL ALERTSMS
Verified verbatimABC10 and SJDCCD Facebook quoting the MustangAlert message151 chars
The Stockton campus of San Joaquin Delta College has received a bomb threat. Police are investigating. Prepare to evacuate. Follow police instructions.
ABC10 quoted the MustangAlert as instructing the community to 'Prepare to evacuate. Follow police instructions'; the district also posted the evacuation message to its Facebook just before 3 p.m. The campus name has been filled in from reporting that the Stockton main campus was the target.
The phrasing 'Prepare to evacuate' rather than 'Evacuate now' reflects a staged response while police organized the search and evacuation.
ALL CLEARSMS+2h 2m
Approximate reconstruction190 chars
MustangAlert: The bomb threat at the Stockton campus has been investigated and nothing was found. All clear. The campus has reopened and normal operations, classes, and services will resume.

This text has been reconstructed from news coverage and may not reflect the exact original wording.

Lodi News reported the all-clear was given at 5:02 p.m. and the campus reopened; the exact MustangAlert all-clear wording was not published, so this text is a reconstruction.
This message explicitly lifts the evacuation and reopens the campus, making it a true all-clear about two hours after the initial alert.
Context

Background

San Joaquin Delta College's Stockton main campus was evacuated on the afternoon of July 6, 2022 after a bomb threat. ABC10 reported that around 3 p.m. district police received a report from the Stockton Police Department that a bomb had been placed on campus, and the college pushed a MustangAlert telling people to prepare to evacuate and follow police instructions. Officers searched the campus and found nothing. Lodi News reported the all-clear was given at 5:02 p.m. and the campus reopened, while CBS Sacramento reported the threat was unfounded and the motive unknown. The case is a clean bomb-threat emergency notification, with a staged 'prepare to evacuate' instruction followed by a definitive all-clear roughly two hours later.
Analysis

Key Findings

A bomb threat relayed through Stockton PD around 3 p.m. prompted a MustangAlert evacuation of Delta College's Stockton main campus
The verbatim alert used a staged 'Prepare to evacuate. Follow police instructions' phrasing rather than an immediate evacuation order
Police found nothing; the all-clear came at 5:02 p.m. and the threat was deemed unfounded with an unknown motive
The initial MustangAlert text was directly quoted; the all-clear is an honest reconstruction based on reporting that it was issued at 5:02 p.m.
Outcome
Police searched the campus and found nothing; the threat was deemed unfounded. An all-clear was issued at 5:02 p.m. and the campus reopened, with classes and services resuming. The motive was unknown.
Provenance

Sources

  1. News
    Police investigating a bomb threat at San Joaquin Delta College - ABC10
    abc10.com
  2. News
    'All clear' given after bomb threat on Delta College campus - Lodi News
    lodinews.com
  3. News
    Bomb Threat At San Joaquin Delta College Proved Unfounded - CBS Sacramento
    cbsnews.com
Tags
bomb-threatevacuationcommunity-collegecaliforniaemergency-notificationunfoundedstocktonUnfounded
Added May 2026Updated May 2026Via ingestion