Police are searching for the shooter who opened fire Tuesday in a New York subway station, leaving at least 29 people injured and turning the morning commuter rush into a scene of horror.

None of the victims suffered life-threatening injuries, New York Police Commissioner Keechant L. Sewell said during an afternoon briefing. Sewell said The shooter put on a gas mask and apparently opened a canister on the train, filling the subway car with smoke and then shooting multiple people on the train and the platform in Brooklyn’s Sunset Park neighborhood.

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