A 16-year-old boy was hospitalized Friday after Nassau County police said his backpack caught fire.

A police spokeswoman said they received a call about an injured teen on Waterford Road in Island Park at about 10:55 a.m.

A flammable substance in his bag overheated and caught fire, burning the boy’s back and arms, the spokeswoman said.

The boy was taken by helicopter to a local hospital. It was not immediately clear what the substance was or how serious the injuries were.

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Death in fire dept. lot leads to lawsuit ... Pols call for loosening tax cap ... LI grad named in Cornell suit ... Colder weather on the way

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