The White House has said there is no indication three flying objects blasted out of the sky over the weekend by the US military are linked to alleged Chinese spying.
The objects may be "tied to commercial or research entities and therefore benign", spokesman John Kirby said.
US and Canadian officials have not yet located or recovered any wreckage from the three downed aircraft.
Beijing earlier accused the US of "a trigger-happy overreaction". เซ็กซี่บาคาร่า
China has denied one of its balloons, which was destroyed by a US fighter jet earlier this month off South Carolina, was being used for espionage, saying it was merely a weather-monitoring airship that had blown off course.