5 NYC schools received white powder in suspicious packages

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At least five Manhattan schools were sent packages with mysterious white powder inside in the past week, police said Thursday.

Each of the schools received a white envelope with the address handwritten in block letters that contained the suspicious substance, later found to be harmless, according to the NYPD.

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"It appears that the motive of the sender is to cause disruption and alarm," cops said in a statement.

One of the incidents happened Tuesday morning at River Park Nursery School on the Upper West Side, Patch reported.

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All 19 children and four staffers inside the building on Amsterdam Avenue near 95th Street were evacuated.

Cops didn’t provide any information on a possible suspect.

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People who receive suspicious mail should not handle the packages and should immediately call 911 instead, the NYPD warned.

This report originally appeared in the New York Post.