According to the officials, whose names have not been revealed, the nature of the ball, nor the party to which it belongs, were not known.
Officials said the balloon flew over parts of Hawaii, but did not fly over any sensitive areas.
According to one of the officials, the US military has been tracking the balloon since the end of the week and classified it as posing no threat to air traffic or national security, and sending no signals.
The American official did not rule out the possibility that the army would release the balloon if it approached the ground, explaining that it was not yet known whether it was intended to study the weather.
Officials said the flying object was unable to maneuver and was moving slowly towards Mexico, and they did not believe it belonged to the Chinese.
It should be noted that last February the US military shot down a balloon over the Atlantic Ocean which the Chinese allegedly used to gather intelligence.
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