He was riding east in the street on Grand Avenue, wearing a helmet, when the tractor-trailer struck him while turning from Jefferson Avenue in the same direction, Lanzilotti said.
Several callers summoned police, he said.
The Bergen County Prosecutor’s Office Fatal Accident Unit, the Bergen County Sheriff’s Bureau of Criminal Identification and the county medical examiner joined Cresskill police and EMS at the scene.
Detectives were interviewing the driver, who was hospitalized for shock.
They also interviewed witnesses at the scene, a few blocks from the school.
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