On Monday a Boeing 777 operated by Alitalia was shadowed by an unidentified drone while landing in the JFK International Airport in New York.
The plane, whose crew alerted the U.S. Authorities, was able to land undisturbed.
A helicopter sent by the New York Police Department failed to detected the drone, which according to a local resident could be just a model operated by amateurs.
The FBI and the U.S. Federal Aviation Administration took the matter seriously, however, opening an official investigation.