Public Alert

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Immediate Dissemination of Emergency Information

Public Alerts


On March 20, 2018, the Stockton Police Department and Stockton Unified School District Police Department received reports of an anonymous threat that was posted on social media. The threat was to commit a shooting at Weston Ranch High School on Friday, March 23rd. Officers from both Departments worked jointly to investigate the threat.

On March 21, 2018, a second threat was posted to social media. Detectives & Officers worked diligently on both threats and subsequently identified one 14-year-old Weston Ranch High School student who made the first threat. Detectives then identified a 15-year-old former Weston Ranch High School student and a 14-year-old One Ambition Manteca student who made the second threat.

All three juvenile suspects were arrested at their homes tonight and subsequently booked at the San Joaquin County Juvenile Justice Center. No weapons were located at the suspects' homes.

“Weston Ranch High School and Manteca Unified School District will seek immediate expulsion for those attending our schools. We want to thank Stockton Police Department and Stockton Unified School District Police Department for their immediate response and continued support during this difficult time. The safety of our students and staff is our number one priority, and we will continue to be vigilant."

3-22-2018 at 5:18 pm: Joint Release from MUSD and MPD

In response to a growing community concern for school safety both the Manteca Unified School District and the Manteca Police Department are working together to ensure the safety of staff and students within the District. We have noticed a social media post indicating unverified verbal rumors which threaten our schools. Currently, District administration working directly with Manteca Police Department have not located a source to deem the threats viable. As a precaution, Manteca Police Department and District administration will have an increased presence at MHS, SHS, and EUHS campuses. We understand there is a heightened concern for safety of students and staff; we encourage you to stay vigilant and continue to report any suspicious activity to your local police or school administration.

3-22-2018 at 2:20 pm: Social Media Threat Update

In our ongoing effort to support students and staff, we want to update you regarding the threatening social media post shared on Tuesday, March 20, 2018 for Weston Ranch High School indicating a shooting on Friday, March 23, 2018.

The District will have an increased administrative and staff presence on site tomorrow. Law enforcement will continue to have an increased presence on our campus.

We understand this is a difficult time and there is a heightened concern for the safety of students and staff. We want to assure you; our staff has reviewed the school safety plan and is prepared to follow appropriate protocols. We will continue to reach out as information becomes available to inform our community.

3-21-2018 at 2:30 pm: Threat Investigation Update

The District takes threats to our schools very seriously. Weston Ranch High School administration will impose the strongest penalty within our jurisdiction on the perpetrator including removal and seeking expulsion if the individual is identified as a student. We will press criminal charges against any individual who makes threats against our schools. The District has sent additional staff on site to support the safety of our students. Law enforcement has an increased presence on our campus as they conduct the on-going investigation. We are fully supporting Stockton Unified Police Department and Stockton Police Department as we run parallel investigations.

3-20-2018 at 8:50 pm: Threat against Weston Ranch High School

This is Principal Baird of Weston Ranch High School, as safety is our number one priority we wanted to alert you of a report of a threat made on social media. The threat stated a school shooting on Friday at Weston Ranch High School. We immediately contacted law enforcement and are working in cooperation as they investigate the credibility of this threat.

We will be working with law enforcement to ensure our campus is safe and secure. Recent events at schools in other states have heightened everyone’s concern for the safety of students. I want to assure you that we take any type of threat seriously and have the full cooperation of the police department. That policy will not change.

Thank you for your support and we ask for you to continue to stay vigilant in helping to protect our students and staff. We will update as we receive further information from law enforcement.



Tonight, the Stockton Police Department became aware of a threatening message which was spreading on social media about a school threat at Weston Ranch High School. This message was posted by an anonymous person and indicated there was going to be a shooting at the school this Friday, March 23rd. 

We are currently working with the Stockton Unified School District Police to determine this threat’s credibility or lack thereof. As part of this investigation, we will be communicating with Weston Ranch High School and the Manteca Unified School District. Out of an abundance of caution, we plan on having an increased presence around Weston Ranch High School. 

The Stockton Police Department will continue to work closely with our schools to ensure the safety of our students and school staff.  

We do encourage people who have information regarding school threats to call the Stockton Police Department at (209) 937-8377 or Crime Stoppers at (209) 946-0600. Callers can remain anonymous.  

People may also text information from their cell phones to ‘Crimes’ (274637) and type the keyword TIPSPD and then their tip or logon to the Stockton Police Department’s Facebook page and click ‘Submit A Tip’. Tipsters may also send tips on the Stockton PD Mobile Phone App. Tipsters can remain anonymous.

If you have any information that may lead to an arrest, call Crime Stoppers at (209) 946-0600. Crime Stoppers pays cash rewards up to $10,000.00.

2-22-2018: False Hoax Sierra High School

Good morning Sierra students, parents and staff. As you are aware, our first priority is for the safety and well-being of our students, their families and our staff. Sierra HS administration received information from the Manteca Police Department about a post that circulated on social media and in Northern California news media outlets early this morning. MPD determined the post was a hoax and not credible. Parents, please take this opportunity to discuss with your students the importance of reporting information to administration and following proper procedures whenever there is a perceived danger. We will continue working with the Manteca Police Department and Manteca Unified to ensure student safety for our school.

5-26-2017 Weston Ranch Area Schools Lockdown Lifted

Good afternoon MUSD families. Student and staff safety is always our number one priority. Early this afternoon, the Stockton Police Department requested that we place our schools in Weston Ranch on lockdown. The police were involved in a pursuit in the area. That lockdown was lifted shortly after the suspect was apprehended. We want to thank our community for their patience as this lockdown was near dismissal time. We wish you all a safe summer break. School will resume on August 7, 2017.

4-20-17 Manteca High School Lockdown Lifted

Our first priority is the safety and well-being of our students, their families, and our staff. Manteca High School was placed on temporary lockdown due to possible activity in the area. The lockdown has now been lifted. We appreciate the patience of our students, staff, and families during this time. We were assured by Manteca Police Department that our students are safe and continued Police Department presence will be available throughout the day. Every MantecaUSD school has an established safety plan and lockdown procedures.

Nile garden evac cover

2-21-17 Nile Garden Elementary will be open tomorrow.

Read the evacuation plan notice from the principal here

Nile Garden elementary school will be open tomorrow. It is outside of the newly established parameters for mandatory evacuation. We will continue to communicate directly with the San Joaquin County Office of Emergency Services. Nile Garden has an established evacuation plan should the need arise. Specific details will be updated on this page. Parents will be notified in the event of evacuation.

 Spanish: La escuela primaria Nile Garden estará abierta el día de mañana ya que se encuentra fuera de los parámetros recientemente establecidos de evacuación obligatoria. Nosotros nos mantendremos en comunicación directa con la Oficina de Servicios de Emergencia del Condado de San Joaquín. Nile Garden cuenta con un plan de evacuación ya establecido, en caso de presentarse la necesidad. Si desea detalles específicos, por favor visite nuestro portal, Se notificará a los padres en caso de una evacuación.

2017-2-22_Emergency Communication MemoEmergency Communication Procedures Reminder

As we enter spring, I want to remind you of Manteca Unified School District emergency communication procedures. Should an unexpected event, such as sudden severe weather, occur during the school day, our top priority is keeping your children safe.

Leer in Español aqui


SJgov-org OES

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