Campus Alert Archive
SJSU

Hidden in the Vents: 39-Minute Gap as a Felon With a Gun Disappeared Into SJSU's Spartan Complex

CAarmed personemergency notificationmedium confidence
Confirmed Threat

On August 8, 2019, San Jose Police chased an armed felon onto the San Jose State University campus at 5:33 PM PDT. The suspect, later identified as 23-year-old transient and parolee Joshua Castro, hid in a third-floor ventilation system inside the Spartan Complex before being apprehended just after 8 PM. SJSU sent its first shelter-in-place text alert at 6:12 PM, 39 minutes after the foot pursuit began.

Alerts
3
Response
39 min
Killed
0
Injured
0
Institution
San Jose State University
Public R2 · CA
~36,000 studentsAlert SJSU
Confirmed Timeline

Alert Sequence

3 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 reconstruction85 chars
Alert SJSU: Possible gunman in the Spartan Complex. Shelter in place. Avoid the area.

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

Reconstructed from contemporaneous local news coverage; SJSU does not maintain a public alert archive that captured this specific text
Issued at 6:12 PM PDT, 39 minutes after San Jose police began pursuing the suspect onto campus at 5:33 PM
The Spartan Complex is the central athletics and recreation building bounded by South 4th and West San Carlos streets
UPDATESMS
Approximate reconstruction119 chars
Alert SJSU: Police are searching campus buildings. Continue to shelter in place. Lock doors and stay away from windows.

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

Reconstructed from local news coverage describing ongoing building-by-building search
San Jose police, SJSU UPD and SJ State officers conducted a methodical sweep of Spartan Complex buildings
Suspect was hiding in a third-floor ventilation system during this period
ALL CLEARSMS
Approximate reconstruction78 chars
Alert SJSU: Suspect is in custody. Shelter in place is lifted. Campus is safe.

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

Reconstructed from ABC7 News reporting that the order was lifted just after 8 PM PDT
Suspect Joshua Castro was located by a K-9 unit inside a third-floor ventilation system; officers used pepper spray while taking him into custody
A handgun was recovered in bushes across the street from campus, where Castro had originally been spotted brandishing the weapon, not on his person
Context

Background

On the evening of August 8, 2019, San Jose police received a call at 5:33 PM PDT reporting a man brandishing a gun near East Santa Clara Street and North 2nd Street, then fleeing toward the SJSU campus near South 4th and West San Carlos streets. Officers spotted a possible suspect who fled into the Spartan Complex, the university's main athletics building. SJSU did not issue its first Alert SJSU notification until 6:12 PM PDT — 39 minutes after the foot pursuit began — drawing later criticism in an ABC7 follow-up that documented gaps in SJSU's emergency communications. The suspect, 23-year-old transient and parolee Joshua Castro, hid in a third-floor ventilation system, where police used a K-9 unit to locate him and pepper spray while taking him into custody just after 8 PM. He was treated at a hospital for the pepper spray before being booked into Santa Clara County Jail. A handgun was recovered in bushes across the street from campus, where Castro had originally been spotted, not on his person.
Analysis

Key Findings

The 39-minute gap between the start of the foot pursuit (5:33 PM) and the first Alert SJSU notification (6:12 PM) prompted later ABC7 investigative coverage of SJSU's emergency notification gaps
The suspect's hiding place — a third-floor ventilation system — illustrates the difficulty of clearing complex multi-story academic buildings
The handgun was recovered across the street from campus, raising questions about whether the threat ever entered SJSU buildings
Outcome
Suspect Joshua Castro, 23, a transient and felon on parole, was located by a K-9 unit hiding in a third-floor ventilation system inside the Spartan Complex. Officers used pepper spray while taking him into custody just after 8 PM PDT; he was treated at a hospital before being booked into Santa Clara County Jail. A handgun was recovered in bushes across the street from campus, where he had originally been spotted, not on his person.
Provenance

Sources

  1. News
    Shelter in place lifted, suspect in custody after man spotted on SJ State campus with gun (ABC7 San Francisco)
    abc7news.com
  2. News
    Police Detain Suspected Gunman Who Ran Onto SJSU Campus (CBS San Francisco)
    sanfrancisco.cbslocal.com
  3. News
    Gunman, Firearm Seized At SJ State Placed On Lockdown: Police (Patch)
    patch.com
  4. News
    Shelter-in-place at San Jose State University reveals big gaps in security measures (ABC7)
    abc7news.com
  5. News
    Possible gunman at San Jose State University prompts shelter-in-place (SF Bay)
    sfbay.ca
Tags
armed-personshelter-in-placecaliforniasan-jose-statespartan-complexventilation-hidingalert-delayfelon-parole
Added May 2026Updated May 2026Via ingestion