(AP) - A private security guard at NewarkLiberty International Airport was arrested on charges ofthreatening Barack Obama the night before the president was to flythere.

A Continental Airlines employee reported overhearing John Brekmake threatening comments at an airport coffee cart Tuesdayafternoon.

The 55-year-old security guard was arrested several hours later,Port Authority spokesman John Kelly said. He denied making thethreats, said Malcolm Wiley, a spokesman for the U.S. SecretService.

Obama was in New Jersey Wednesday to campaign for NewJersey Gov. Jon Corzine.

Brek allowed police to search his Linden home and officers found43 firearms, Kelly said. The firearms were still being processed,but no illegal guns had been found.

A message left by The Associated Press at Brek's home Wednesdaywas not immediately returned. His father, John, told TheStar-Ledger of Newark that his son has the guns because he's anavid hunter.

Brek was arrested by Port Authority Police and charged understate law with making terroristic threats against the president. Hehas not been arrested on federal charges, Wiley said.

Bail has been set at $100,000 for Brek, who faces five years inprison for the third-degree felony charge, according to EssexCounty Prosecutor's Office spokesman Paul Loriquet. He said Brek isbeing held in the Essex County jail and is to be arraignedThursday.