He believed that a different security environment results in the phenomenon.

"Chinese tourists are sometimes naive and can easily be trapped because they are not used to being confronted by villainous crime," he said. "In China, Japan and other Asian countries, pickpocketing, theft by deception and robbery hardly exist."

In order to curb crimes targeting tourists, the police launched an action plan with 26 measures to protect them this year. Patrols were increased and more officers sent to popular tourist sites such as the Louvre, Montmartre, Notre Dame and the Champs-Elysees.

The measures produced "tangible results". The bureau saw a drop of more than 13 percent of robberies recorded in the Louvre, and the Champs-Elysees area had a decrease of more than 24 percent of robberies and nearly 22 percent of intentional injury.

The police department's Chinese web page also has provided many crime-prevention tips, as well as the location of police stations and how to report a crime.

In the future, the police said, the city's security will be further strengthened through continued partnership actions taken with Asian embassies such as China's and Japan's.