It happened at a routing security screening checkpoint at one of the Disney hotels. The jihad gear was found in the man's luggage after undergoing an X-ray. The police were called and the Islamic jihadist was arrested. "We continue to work closely with the authorities, and the safety and security of our guests and cast members is our utmost priority, " the park's VP of Communication and Public Affairs Francois Banon said, in French.
According to French media, the man is from Paris but has gone under the radar with local police and French intelligence. A woman was arrested with him and she is the jihadist's girlfriend, a police source told the AFP.
French media reported that police seized two small-caliber handguns and a 7.65 caliber cartridge box. The Koran was also found in the man's suitcase.
Disneyland Paris is only 18 miles east of Paris and is Europe's most visited theme park.
France has operated under a state of emergency after the Paris jihad attacks in November 2015. Those attacks left 130 dead and many injured. Disneyland Paris closed briefly afterward.
Although the state of emergency declared in France was due to expire at the end of next month, French President Francois Hollande has proposed a three-month extension. At last count, almost 400 Islamic extremists have been placed under house arrest through the state of emergency.