CHICAGO (WLS) -- Seven students were hospitalized after a science experiment Thursday at a CPS elementary school on the city's Northwest Side, sources said.

The incident happened at José de Diego Community Academy on North Claremont Avenue in West Town.

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At least seven children were taken from the school to hospitals in good condition, sources said. They were involved in a science experiment.

Chopper 7 was over the scene, where there appeared to be a hazmat response at the school.

ABC7 has reached out to Chicago Public Schools for more information.

This is a developing story. Check back for updates.

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