Alexis Guilleux with AFP 6:54 a.m., February 10, 2023, modified at 6:54 a.m., February 10, 2023

Footage captured by US military aircraft shows that the Chinese balloon that flew over the United States last week was indeed equipped with spy tools, and not intended for weather forecasting, US officials said Thursday.

Snapshots taken by U2 spy planes indicate the balloon hardware "was clearly made for spy observation purposes, and does not fit with weather balloon equipment," a senior U2 official said. US State Department, on condition of anonymity.

"It had many antennas, a set probably capable of collecting and geolocating communications," he added in a statement.

The balloon "was equipped with solar panels large enough to provide the energy necessary to operate multiple sensors collecting intelligence", he further specified.

The American authorities are still busy collecting the remains of the balloon

Washington shot down a balloon off its Atlantic coast on Saturday that had flown over sensitive military sites and had been described by Beijing as a "civilian aircraft used for research purposes, mainly meteorological".

This diplomatic clash had led the head of American diplomacy Antony Blinken to postpone a rare visit to China.

The American authorities are still busy collecting the debris from the balloon in the Atlantic, near the coast of South Carolina.

An FBI official, who is responsible for examining them, said only a "small part" of the surveillance equipment had been recovered.

"The exhibits that were recovered and brought to the FBI are very limited," he said, adding that they are being examined at federal police labs in Quantico, Virginia.

What has been recovered so far was floating on the surface of the ocean, said the official, who spoke on condition of anonymity.

Most of the equipment, including the large solar panels, sank to a depth of 14 meters when the balloon was shot down on Saturday.

A "direct" link with the Chinese army

The FBI did not specify whether these parts had been located but warned that bad weather could hamper their recovery.

The United States believes the balloon was controlled by the Chinese military and was part of a fleet sent by Beijing over more than 40 countries on five continents for espionage purposes.

"We are convinced that the manufacturer of the ball has a direct link with the Chinese military," added the senior State Department official.

He said Washington was weighing possible measures against Chinese entities linked to the ball - which could indicate possible sanctions to come.

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During a congressional hearing, a Pentagon official defended the US military's decision not to shoot down the balloon off Alaska as soon as it entered US airspace. January 28.

It would have been much more difficult and "extremely dangerous" to recover it in the icy waters of the North Pacific, more than 5,000 meters deep, noted Melissa Dalton, in charge of North America at the Ministry of Defense.

“We continuously monitored and evaluated it, and we learned more about China's spying capabilities and techniques,” she said.

The elected members of the American House of Representatives have also unanimously denounced "the use by the Chinese Communist Party of a spy balloon", considering that it is a "shameless violation of the sovereignty of States -United".

For China, knocking down this balloon is an "irresponsible act"

China also confirmed Thursday that it declined a phone call from Pentagon chief Lloyd Austin on Saturday, shortly after the balloon was destroyed.

"This irresponsible and seriously erroneous act has not created a climate conducive to dialogue and exchanges between the two armies", justified the Chinese Ministry of Defense in a press release.