A private security guard at Newark Liberty International Airport was arrested and charged Tuesday in connection with an apparent threat against President Barack Obama, PIX News has learned.

According to authorities, 55-year-old John Brek made, what they're describing as "terroristic threats" against Obama.

Brek was overheard making disparaging remarks about the President, to an airline employee at a coffee cart at the airport, a Port Authority spokesperson told PIX News.

The remarks alarmed the unidentified co-worker who later alerted police.

A search at Brek's Linden home uncovered 43 guns. Most of the firearms, however, were properly licensed, police said.

Brek, who is expected to appear in court Wednesday, reportedly works for FJC Security, a sub-contractor at Newark Airport.

Port Authority is leading the investigation in the alleged threat, while the Secret Service is assisting, officials said.

President Obama was in town Tuesday, raising money for several New York Democrats. He is scheduled to appear at a campaign rally in Hackensack Wednesday, where he will stump for Governor Jon Corzine.