A spokesman of the air station said today that "she is not airplanes because the points did not correspond to the position of any of which they were then in the air".

The mysterious points began to at night materialize Monday on the radars of the controls of Logan International Airport, informed Ansa agency.

As precaution measurement the control of the flights were transferred by some hours to the center radar of reserve of New Hampshire, from fear of badly an operation of the system of radars of Boston.

In addition the controllers increased the safe distance between the flights between 5 and 8 kilometers, precaution that caused the delay of numerous flights.

The effect dominated caused delays of up to four hours and the authorities of American civil aviation opened an investigation on the fact.

Other airports had similar problems but the mysterious objects appeared only in the radars of Boston. (Télam)