London police have expanded their investigation into last month’s anti-war protest outside RBC Place, resulting in new charges against four individuals and a warrant issued for a Toronto woman. The demonstration, which coincided with the Best Defence Conference on October 21, 2025, involved protesters confronting security and police outside the event.
Authorities say the investigation is ongoing, with more developments expected as court dates approach in early January 2026.
Investigation Expands Across Multiple Cities
New Charges Across Ontario
London police have laid charges against four individuals from London, Hamilton, Toronto, and Marmora. Authorities executed search warrants at four separate addresses, seizing items linked to protest planning and potential property damage.
Items recovered during the searches included:
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Computers and laptops
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Cellphones and USB thumb drives
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Hard drives and iPads
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Protest placards
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Two-way radios and smoke bombs
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Handwritten documents detailing police Public Order Unit tactics
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Plans indicating potential property damage during the protest
The investigation underscores the breadth of the police operation and the level of planning authorities allege was involved.
Types of Charges
Three of the accused face charges ranging from obstructing police to mischief, according to law enforcement officials. The accused are scheduled to appear in court early January 2026 to face the charges stemming from the RBC Place demonstration.
These latest charges build on prior arrests made by London police, including:
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A man from LaSalle
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A woman from Owen Sound
Both were previously charged in connection with the October 21 protest.
Toronto Woman Sought by Police
Details of the Suspect
London police are currently seeking 43-year-old Diana Thorpe of Toronto. She is charged under a warrant of arrest with:
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Disguise with intent
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Two counts of mischief over $5,000
Police describe Thorpe as:
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Female, White
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Approximately 6’0” tall
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161 lbs
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Short grey and brown hair
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Blue eyes
Authorities have urged anyone with information regarding her whereabouts to come forward.
How to Provide Information
Individuals with relevant information are encouraged to contact London Police Service at (519) 661-5670. Anonymous tips can also be submitted to Crime Stoppers at 1-800-222-TIPS (8477) or via their online submission form.
Police emphasize that information from the public is critical to advancing the investigation and ensuring accountability.
Context: Best Defence Conference Protest
Event Background
The protests occurred outside RBC Place in London during the Best Defence Conference, a high-profile event attracting defence industry professionals from across the country.
Authorities allege that the protesters, including those now charged, were involved in coordinated activities intended to disrupt the conference. Items seized from homes indicate premeditation and planning, including plans for property damage and tools to evade police detection.
Previous Arrests and Charges
Prior to the latest round of charges, two individuals were arrested in connection with the protest:
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A man from LaSalle
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A woman from Owen Sound
Both faced mischief and related charges linked to the October demonstration. The expanded investigation now brings additional charges against four more individuals, with the Toronto woman, Diana Thorpe, remaining at large.
Law Enforcement Response
Scope of Investigation
Police executed search warrants across multiple cities to recover evidence. The items seized suggest the protesters had extensive plans for disruption, including the use of smoke bombs, two-way radios, and detailed notes on police tactics.
“These items are consistent with planning to cause significant disruption and property damage,” a London Police spokesperson said. “The investigation continues to ensure that all responsible individuals are identified and held accountable.”
Emphasis on Public Safety
Police have highlighted that their actions are intended to maintain public safety and ensure peaceful demonstrations while protecting both participants and the broader community.
Authorities are reminding the public that interfering with lawful events or engaging in property damage carries serious legal consequences, as demonstrated by the current investigation.
Upcoming Court Dates
Legal Proceedings
All newly charged individuals are expected to appear in court in early January 2026. Charges vary based on the individual’s alleged actions, with offenses ranging from obstruction of police to mischief.
The Toronto woman, Diana Thorpe, remains at large, and her case will proceed once she is apprehended.
Police and the Crown will provide updates as further arrests are made or charges are confirmed, ensuring transparency in the judicial process.
Community Call to Action
Public Assistance Requested
London police are seeking public assistance to locate Diana Thorpe and any other individuals involved in planning or executing the October protest.
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Phone: (519) 661-5670 (London Police Service)
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Crime Stoppers: 1-800-222-TIPS (8477)
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Online: Anonymous tips can be submitted via London Middlesex Crime Stoppers
Authorities stress that tips can be submitted confidentially and are vital to ongoing investigations.
Importance of Community Cooperation
Police have acknowledged the complexity of the investigation, noting that community cooperation is essential in cases involving multiple jurisdictions. By providing information, residents can help law enforcement prevent further criminal activity and ensure public safety at major events.
Summary of Investigation Findings
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Four individuals charged across London, Hamilton, Toronto, and Marmora.
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Toronto woman sought on charges of disguise with intent and mischief over $5,000.
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Items seized include electronic devices, protest materials, and documents outlining police tactics.
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Charges range from obstructing police to mischief.
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Court appearances set for early January 2026.
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Public encouraged to provide information to police or Crime Stoppers.
This summary underscores the scale and seriousness of the investigation, highlighting both the legal consequences and the proactive measures taken by authorities to address public safety concerns.
Conclusion: Accountability and Public Safety
The ongoing investigation into the anti-war protest at RBC Place demonstrates law enforcement’s commitment to ensuring accountability and maintaining public safety during high-profile events. With multiple charges laid and additional suspects sought, authorities are sending a clear message that planning or participating in disruptive and illegal activities carries significant consequences.
The case will continue to unfold in the coming months, with court proceedings and further investigative actions keeping public safety and transparency at the forefront

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