Nassau County police are investigating a robbery Saturday in Lakeview during which the victim was struck in the face and his iPhone and cash taken.

Police said the victim, identified only as an 18-year-old male, was walking in the rear of Malverne High School near Parkside Road about 4:30 p.m. when he was approached by four males wearing dark clothing, hooded sweatshirts and masks.

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The suspects struck the victim in the face, knocking him to the ground and took his cash and cellphone, police said. The suspects then fled. The victim was taken to a hospital for treatment of his injuries and released.

Detectives ask anyone with information about the incident to contact Nassau County Crime Stoppers at 1-800-244-TIPS. All call will be kept confidential.