DEMAREST, N.J. (AP) — Authorities are offering a $5,000 reward to resolve a tip of a shooting threat that led to tighter security at a northern New Jersey high school.

Students at Northern Valley Regional High School in Demarest have had to pass through metal detectors since Tuesday.

Police received an anonymous tip Monday, reported through the website WeTip, that four males were overheard in a school corridor discussing a shooting sometime this week.

Demarest Police Chief James Powderley III told The Record newspaper police are still interviewing a lot of people and following all leads.

(Copyright 2010 by The Associated Press. All Rights Reserved.)

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