A man carrying two handguns has been arrested at Disneyland Paris.
The 28-year-old was found with the weapons, ammunition and a copy of the Koran after trying to pass through security at a hotel at the resort, according to reports.
The suspect's partner fled after he was seized and is reportedly still on the run.
Police arrested a woman at the park, believing her to be the man's partner, but she was later released when they realised they had got the wrong woman, French media reported.
France remains under a state of emergency since the deadly Islamist attacks in Paris in November which killed 130 people.
There are several hotels around Disneyland Paris, which attracts thousands of British holidaymakers each year and is among Europe's most-visited tourist attractions.
The man was stopped by security staff when his bag passed through an X-ray machine at Disneyland Paris's New York Hotel.
He is not known to security services and gave no resistance when he was arrested, according to reports.
Francois Banon, a spokesman for Disneyland Paris, said: "During a routine security screening checkpoint at one of our hotels, weapons were discovered in a guest's luggage through our X-ray machine.
"The police were immediately notified and the individual 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."
Nobody was hurt in the incident, which happened at the entrance to the four-star New York Hotel.
French newspaper Le Parisien said the man - who is reportedly of European origin - had booked a room for two people and his vehicle had been sealed off.
The park remains open and employees at several hotels around the resort said they continued working as normal after the arrest.
Disneyland Paris is about 18 miles east of the French capital and is the most visited theme park in Europe, with almost 10 million visitors in 2014, according to the Global Attractions Attendance Report.
The resort was closed to the public for a number of days after the Paris terror attacks in November.