May 6, 2015 10:14 AM EDT

A large tree collapsed at a park in Chelsea, Mass. Monday evening, injuring two children and leaving the park closed for inspection, the city police department announced in a press release.

The collapse, captured on video, occurred in the “children’s playing area” of the park. Children can be seen running and playing in the seconds before the tree falls. The two injured boys, ages 2 and 8, were transported to local hospitals and were being treated for serious injuries.

“I am wishing both of the injured children a speedy recovery and am grateful that others in the park escaped injury,” said Chelsea Police Chief Brian A. Kyes in a statement.

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