Campus Alert Archive
CSI

A Man With a Gun Crosses the CSI Campus, Triggering a Sunday-Night Shelter-in-Place

IDarmed personemergency notificationmedium confidence
Under Investigation

On the evening of Sunday, September 18, 2023, the College of Southern Idaho issued a shelter-in-place order for campus residents after the Twin Falls Police Department reported pursuing an armed suspect who had traveled across the main CSI campus in Twin Falls. The suspect was last seen near the campus pickleball courts at about 7:49 p.m. MDT; a campus lockdown was declared at 7:54 p.m. and a RAVE alert went out around 8:08 p.m. MDT. The shelter-in-place was later lifted with an all-clear.

Alerts
2
Response
—
Killed
—
Injured
—
Institution
College of Southern Idaho
Community College · ID
~8,000 studentsCSI RAVE Alert
Confirmed Timeline

Alert Sequence

2 messages in sequence

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
Approximate reconstruction223 chars
CSI ALERT: SHELTER IN PLACE. Twin Falls Police are pursuing an armed suspect who crossed the CSI campus, last seen near the pickleball courts. Lock doors, stay inside and away from windows. Do not approach. Await all-clear.

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

CSI's timeline shows the lockdown declared at 7:54 p.m. MDT but the RAVE mass alert sent about 14 minutes later at 8:08 p.m., capturing the lag between an internal decision and the message reaching phones.
Reconstructed wording; KMVT reported the suspect's path across campus and the alert timing but did not publish the verbatim RAVE text.
ALL CLEARSMS
Approximate reconstruction204 chars
CSI ALERT: ALL CLEAR. The shelter-in-place has been lifted. Twin Falls Police have cleared the area and there is no longer a threat on campus. Normal activities may resume. Thank you for your cooperation.

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

The all-clear lifted the residential shelter-in-place after police completed their search of the campus area.
Reconstructed wording; the all-clear is confirmed by local reporting but its exact text and precise time were not recoverable.
Context

Background

The College of Southern Idaho's main campus is in Twin Falls. On Sunday evening, September 18, 2023, KMVT reported that CSI Campus Safety issued a shelter-in-place after Twin Falls Police pursued a suspect with a gun who had traveled through the main CSI campus. The suspect — described as roughly 6 feet tall with red balding hair, glasses, a gray t-shirt, and flame tattoos on one hand — was last seen near the campus pickleball courts at about 7:49 p.m. MDT. A campus-wide lockdown was declared at 7:54 p.m., and a RAVE alert reached the community around 8:08 p.m. MDT. KIVI-TV reported the shelter-in-place was later lifted with an all-clear. CSI maintains emergency-management guidance for active-threat situations. This Sunday-evening incident is distinct from CSI's earlier February 2023 shelter-in-place tied to a separate Twin Falls threat.
Analysis

Key Findings

CSI's own timeline shows a roughly 14-minute gap between declaring the lockdown (7:54 p.m. MDT) and sending the RAVE mass alert (8:08 p.m. MDT)
The threat was a suspect fleeing through campus rather than an attacker targeting the college, but the path across campus property justified a full shelter-in-place
A Sunday-evening incident tested the alert system's reach to residential students at a time of low campus activity
Outcome
The suspect, described as a roughly 6-foot male with red balding hair, glasses, a gray t-shirt, and flame tattoos on his hand, prompted a campus-wide shelter-in-place; CSI later gave an all-clear. No campus injuries were reported.
Provenance

Sources

  1. News
    UPDATE: College of Southern Idaho issues Shelter In Place order for campus residents - KMVT
    kmvt.com
  2. News
    CSI all clear following lockdown warning - KIVI-TV
    kivitv.com
  3. Official
    Shots Fired on Campus - Surviving an Active Shooter Incident - College of Southern Idaho
    csi.edu
Tags
armed-personshelter-in-placeidahocommunity-collegetwin-fallsrave-alertUnder Investigation
Added May 2026Updated May 2026Via ingestion