The French police said on Wednesday that the drones had flown over central Paris, the capital city, at least five times.
The drones had been spotted near the US embassy, Eiffel Tower, and several major roads leading in and out of Paris, the police further noted.
On Tuesday, a French security source, speaking on condition of anonymity, had reported another spate of drone flights, saying that police had spotted at least five drones buzzing over several places in the capital.
The security source added that police failed to catch the operators of the drones flying over central Paris landmarks in the early hours of Tuesday.
The US embassy, the Eiffel Tower, The Place de la Concorde, a major public square in Paris, and the Invalides military museum were among the places that witnessed the drones flying over them on Tuesday, the source said.
Several mysterious pilotless aircraft have been spotted flying over French cities in the last few months.
On January 20, a drone was seen flying briefly over the French Presidential Palace in the central part of Paris.
A probe has been launched into the incident by the Paris prosecutor’s office.