Turin, November 28 - Police in the northern Italian city of Turin are taking a new, high-technology approach to fighting drug crime: drones. Police say they made three arrests on Tuesday with the help of a drone - a miniature helicopter equipped with a remote-controlled camera. The devices will be used for a month as an experiment in the neighbourhood of San Salvario in Turin, to see how effective it is at tracking drug deals. The drones are normally used to film sporting events or in surveillance on private property. Police say the drone is easy to use and follows a GPS so it can be programmed to follow a specified path. The idea of using unmanned drones by police has been controversial in the United States, generating opposition from civil libertarians and others who say the use of stealth, airborne cameras raises concerns about privacy rights and the limits to police search powers. Drones also raise eyebrows because of their association with unmanned crafts used for missile strikes in war zones.