Campus Alert Archive
UA

UA Alert at 12:30 AM: 'Police May Deploy Chemical Irritant Munitions' -- Tear Gas Clears Tucson's Gaza Encampment

AZcivil unrestemergency notificationmedium confidence
Confirmed Threat

Shortly after midnight on May 1, 2024, the University of Arizona issued a UA Alert warning that police may deploy chemical irritant munitions and ordering all persons to leave the area immediately, following President Robert Robbins's directive to enforce campus use policies. At approximately 2:00 AM, UAPD officers, Pima County Sheriff's deputies, and Arizona Department of Public Safety troopers in gas masks and riot gear moved into the encampment, deploying tear gas and dismantling the 'UA Liberated Zone' camp that had formed on the western edge of campus on April 29. At least four arrests were made, and the university fenced off portions of the UA Mall the following morning.

Alerts
3
Response
—
Killed
0
Injured
0
Institution
University of Arizona
Public R1 · AZ
UA Alert
Confirmed Timeline

Alert Sequence

3 messages in sequence · 2 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 verbatimTucson.com / Arizona Daily Star quoting the verbatim UA Alert text; wording confirmed across multiple outlets (AZPM, ABC News, CBS News) covering the May 1, 2024 encampment clearance103 chars
Police may deploy chemical irritant munitions. Follow the orders of police. Leave the area immediately.
UA Alert is the University of Arizona's emergency mass-notification system, delivering via SMS, email, phone call, and the ua.edu emergency website; this message was sent at approximately 12:30 AM MST on May 1, 2024
Arizona does not observe daylight saving time, so MST (UTC-7) is the year-round timezone in Tucson; May 1 notifications are 12:30 AM MST, not 12:30 AM MDT
The phrase 'chemical irritant munitions' is the formal term for CS gas (tear gas) used in UA's operational communications, distinguishing it from the colloquial 'pepper spray'
UPDATESMS+1h 30m
Verified verbatimU of A Office of Public Safety (@UArizonaPolice) official X post, May 1, 2024 — verbatim text of UAlert Update 5157 chars
UAlert Update 5 Police deploying chemical irritant munitions. Follow orders of police and disperse immediately. Avoid the area of University Blvd & Park Ave.
This second UA Alert was issued in real time as tear gas was deployed -- one of the few confirmed instances in this archive where a mass-notification system was used to announce active chemical-agent deployment rather than merely warn of the possibility
Officers from UAPD, Pima County Sheriff's Office, and Arizona Department of Public Safety all participated in the operation, reflecting multi-agency coordination under President Robbins's executive directive
The encampment on the western edge of campus had earlier on April 30 dispersed voluntarily before the 10:30 PM deadline; a second group reformed overnight and remained when officers arrived at 2:00 AM
FOLLOW-UPEmail
Approximate reconstruction469 chars
[University of Arizona President Robert Robbins issued a statement to the campus community stating that law enforcement had cleared the unauthorized encampment on the western edge of campus. The UA Mall was now fenced off and posted with no-trespassing signs pending assessment. The university had been left with no choice but to act after protesters refused to comply with repeated requests to dismantle the camp. The Tucson campus would operate on a normal schedule.]

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

President Robbins had personally ordered enforcement after protesters who dispersed voluntarily on April 30 at 10:30 PM reformed a second encampment overnight on the western edge of campus near Park Avenue
The UA Mall was fenced off and posted with no-trespassing signs on May 1, closing the iconic 0.8-mile pedestrian spine that runs through the heart of the Tucson campus
A subsequent University of Arizona encampment on May 10, 2024 also resulted in tear-gas deployment -- making UA one of two Arizona universities (along with ASU) to use chemical agents against campus protesters in spring 2024
Context

Background

The University of Arizona's Gaza encampment response stands out in the spring 2024 wave as one of the most aggressive in the Southwest. Students set up the 'UA Liberated Zone' on the University of Arizona Mall beginning April 29, 2024, with about 60 students and community members. University police initially monitored without arresting, warning that the Mall closed at 10 PM. On April 30, protesters voluntarily dispersed before the arrest deadline at 10:30 PM. However, a second encampment formed on the western edge of campus overnight -- and when the 10:30 PM deadline passed without full compliance, President Robert Robbins directed law enforcement to 'immediately enforce campus use policies' without further warning. At approximately 12:30 AM MST, UA Alert issued the 'chemical irritant munitions' warning -- one of the most direct pre-deployment chemical agent warnings documented in this archive. At 2:00 AM, tear gas was deployed and a second UA Alert confirmed it. UAPD, Pima County Sheriff's deputies, and DPS troopers in gas masks and riot gear cleared the camp. At least four arrests were made. The following morning, the university fenced off the UA Mall and posted no-trespassing signs. A second tear-gas operation followed on May 10, 2024, making UA distinctive among the 2024 encampment cases for repeated use of chemical agents.
Provenance

Sources

  1. News
    U of A president orders arrests, police and protesters clash, camp broken up (Tucson.com / Arizona Daily Star)
    tucson.com
  2. News
    Law enforcement storms encampment on University of Arizona campus (AZPM)
    news.azpm.org
  3. national media
    University of Arizona police forced to deploy chemical munitions to break up anti-Israel riot (Fox News)
    foxnews.com
  4. Student Paper
    Discord, unrest and arrests after police action at Palestinian encampment (Daily Wildcat)
    wildcat.arizona.edu
  5. News
    U of A fences off iconic mall after protest encampment (Tucson.com)
    tucson.com
  6. Social
    U of A Office of Public Safety UAlert Update 5 (@UArizonaPolice on X)
    x.com
Tags
civil-unrestgaza-encampmenttear-gaschemical-munitionsua-alertuapdpima-county-sheriffcampus-mallarizonapublic-r1
Added May 2026Updated May 2026Via ingestion