VALLEY STREAM - ? Cops say two muggings happened in two days near a school in Nassau County and it has parents and kids on edge.

The robberies happened Monday and Tuesday near Central High School in Valley Stream.

Cops say a 16-year-old boy walking home from school was knocked down and hit in the face with some type of object. His backpack, cash and cell phone were stolen.

A day later, cops say another young man who was not a student was robbed in the same area. Cops are asking anyone with information about the robberies to call Nassau Crime Stoppers at 1-800-244-TIPS.