A 9-year-old girl fell while zip lining at a Hudson Valley town’s community day. A very avoidable mistake caused the accident.

On Saturday around 7:30 p.m., New Windsor police and New Windsor ambulance were told about an injury that happened on the zip line ride at New Windsor Community Day.

Arriving officers found a 9-year-old girl being treated underneath the zip line. The girl rode the ride for about 20-feet before falling to the ground, police say.

The girl was taken to Westchester Medical Center where she was treated for a broken leg.

The employee of the zip line ride didn’t attach the girl’s harness to the zip-line, police believe.

The New Windsor Detective Division is investigating the accident. If anyone has information please contact them at 845-565-7000.

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