Lockdown Lifted at Newmarket High School After Phone Threats, Police Say
York Regional Police cleared the school near Pickering Crescent and Mulock Drive following a series of ongoing threats made by telephone.

CANADA —
Key facts
- Officers responded to an unnamed school near Pickering Crescent and Mulock Drive just before 9 a.m. on May 1.
- Threats were made by telephone, prompting a lockdown and large police presence.
- Lockdown was lifted after a thorough check; no ongoing threat to public safety.
- No injuries have been reported.
- Newmarket High School is located at 505 Pickering Cres.
- Police continue to investigate the validity of the threat.
- Anyone with information can call 1-866-876-5423, extension 7141.
Morning Lockdown at Newmarket School
York Regional Police officers were called just before 9 a.m. on May 1 to a school near the intersection of Pickering Crescent and Mulock Drive in Newmarket, Ontario, following a series of what police described as “ongoing threats” made by telephone. The school, which police have not named, was placed under lockdown as officers established a “large police presence” and conducted a thorough search of the premises. The lockdown lasted approximately 90 minutes, with the York Regional Police issuing an online update just after 10:30 a.m. confirming that it had been lifted.
Police Clear School, No Threat Found
“School has been cleared and there is no ongoing threat to public safety,” police said in their update. Officers are continuing to investigate “the validity of the threat,” they added. in connection with the incident. The swift response and subsequent all-clear underscore the heightened sensitivity around school security in the region.
Location and Community Context
Newmarket High School, a prominent educational institution in the area, is located at 505 Pickering Crescent, just steps from the scene of the morning’s police activity. While police have not confirmed whether the threats were directed at Newmarket High School specifically, the proximity has drawn attention from local residents and parents. The incident comes amid broader discussions about school safety protocols in Ontario, though police have not indicated any connection to other recent events.
Investigation Ongoing, Public Asked for Tips
York Regional Police are continuing their investigation into the source and credibility of the threats. Authorities have urged anyone with information to contact them at 1-866-876-5423, extension 7141. The police statement did not provide details about the nature of the threats or whether any suspect has been identified. The investigation remains active.
Broader Implications for School Security
The lockdown at the Newmarket school is the latest in a series of security incidents at Canadian schools that have prompted lockdowns and evacuations in recent months. While each case is distinct, the pattern has led to increased vigilance among school boards and law enforcement. In this instance, the rapid resolution and lack of injuries will likely be a relief to the community, but the incident serves as a reminder of the challenges schools face in responding to potential threats.
The bottom line
- A school near Pickering Crescent and Mulock Drive in Newmarket was locked down on May 1 after phone threats.
- York Regional Police cleared the school and found no ongoing threat; no injuries reported.
- Newmarket High School is located nearby, though police have not confirmed it was the target.
- The investigation into the validity of the threats continues.
- Police have asked the public for tips via a dedicated phone line.







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