London police closed Kensington Gardens on April 17 after a video claimed drones targeted the nearby Israeli Embassy with dangerous substances. [1]

The shutdown raises public‑safety concerns and highlights the challenge of responding to online threats that could impact diplomatic sites, residents, and visitors to one of the city’s most popular parks. Police said the area was being inspected for hazardous material, and the incident underscores how quickly misinformation can trigger emergency responses. [2]

Metropolitan Police officers in protective gear arrived on scene, cordoned off the garden’s main pathways and began collecting discarded items that might contain chemicals or other dangerous payloads. Hazard‑material teams were deployed to test any recovered debris, while nearby streets were rerouted to keep traffic flowing. The police response was described as a precautionary haz‑mat investigation, not a confirmed attack. [3]

The video was posted by the extremist group Harakat Ashab al‑Yamin al‑Islamia, which claimed the unmanned aircraft were flown toward the Israeli Embassy carrying “dangerous substances.” The group’s online statement identified the embassy as its target, prompting authorities to treat the claim seriously despite lacking physical evidence. [4]

Contradictory reports emerged about the drones’ payload. The Sun said the devices carried radioactive material, suggesting a genuine threat to the embassy. However, BBC News said police have not confirmed any such attack and said the video’s claims are unverified. [6] [1] The Metropolitan Police have not disclosed any findings indicating radiation or other hazardous agents were present. [5]

The incident arrives amid heightened tensions in the region and an increase in extremist propaganda that leverages social media to sow fear. Security officials said the need for rapid verification of threats to avoid unnecessary panic while protecting diplomatic missions. The garden remains closed pending the completion of the haz‑mat assessment, and a public statement will be issued once the investigation concludes. [2]

Police said the gardens were being inspected for hazardous material.

The closure of Kensington Gardens illustrates how online extremist claims can compel law‑enforcement to launch costly, disruptive safety operations even when the threat remains unverified. It also highlights the difficulty for authorities to balance rapid response with the need to prevent misinformation from escalating into public alarm, especially when diplomatic sites are involved.