Flea invasion forces shutdown of Paris police station??? (CNN)Police in Paris were forced to close a station in the northeastern part of the city after a flea invasion made work impossible, according to a police union. The station in the French capital's 19th arrondissement was evacuated on Sunday. Pictures in local media show a sign on the door reading: "Police station closed until further notice." The Alliance police union said in a tweet that officers at the station had been under siege from the fleas for several days, which "made working conditions INTOLERABLE!!!" Yvan Assioma, the union's Paris regional secretary, told CNN the fleas had probably been brought in by people taken into the station for custody or questioning