(CNN) — The Biden administration has determined that the suspected Chinese surveillance balloon that traversed the United States last week was operating with electronic surveillance technology capable of monitoring US communications, according to a senior State Department official.

The balloon “was capable of conducting signals intelligence collection operations” and was part of a fleet that had flown over “more than 40 countries across five continents.”

“We know the PRC used these balloons for surveillance,” the official said. “High resolution imagery from U-2 flybys revealed that the high-altitude balloon was capable of conducting signals intelligence collection operations.”

Signals intelligence refers to information that is gathered by electronic means — things like communications and radars.

Despite the latest revelations about the capabilities of the spy balloon, the Pentagon has insisted since the vessel was first acknowledged publicly that it does not give China capabilities above and beyond what they already have from spy satellites or other means.

“We did not assess that it presented a significant collection hazard beyond what already exists in actionable technical means from the Chinese,” said Gen. Glenn VanHerck, the commander of US Northern Command and NORAD, on Monday.

Capitol Hill briefings

Administration officials from the Pentagon, State Department and intelligence community briefed lawmakers on Capitol Hill Thursday on the balloon, which has prompted criticism from Republicans over allowing it to float across the US before it was shot down off the Atlantic coast.

Sources familiar said the House’s briefing with Biden administration officials was tense. The officials told lawmakers that the US has assessed that little new intelligence was gleaned by the Chinese balloon operation because the Chinese appeared to stop transmitting information once the US learned of the balloon, in addition to US measures to protect sensitive intelligence from China’s spying operations, according to the sources.

The US also believes what they have recovered from the shot-down balloon is beneficial to US intelligence, the sources said.

The State Department official said the balloon was part of a Chinese fleet developed to conduct surveillance operations” with a manufacturer tied to China’s People’s Liberation Army (PLA), the official added.

The official suggested that the US is eyeing sanctions for the presence of the balloon in US airspace — which US officials have repeatedly called a violation of US sovereignty and international law — noting the US “will also explore taking action against PRC entities linked to the PLA that supported the balloon’s incursion into US airspace.”

A recovery operation to secure debris from the balloon is ongoing with analysis continuing at an FBI laboratory in Virginia, but the officials’ remarks suggest the US has already established the balloon was operating with electronic surveillance technology.

However, the US has said it has been able to prevent the balloon from intercepting US communications.

“The high-altitude balloons’ equipment was clearly for intelligence surveillance and inconsistent with the equipment onboard weather balloons. It had multiple antennas to include an array likely capable of collecting and geo-locating communications. It was equipped with solar panels large enough to produce the requisite power to operate multiple active intelligence collection sensors,” the official added.

“We could track the exact path of the balloon and ensure no activities or sensitive unencrypted comms would be conducted in its vicinity,” a senior administration official said this week. “The US military took immediate steps to protect against the balloon’s collection of sensitive information, mitigating any intelligence value to the PRC.”

Administration looked to avoid escalating tensions with China

In the congressional briefing, the administration officials argued that the US didn’t move earlier to shoot down the balloon in part over fears it could provoke an escalation of military tensions with China or even a military conflict. Biden gave the order to shoot down the balloon whenever the Pentagon felt it was safe to do so, the sources said, so the Pentagon ultimately made the call on when to shoot it down.

The House briefing Thursday morning was tense, the sources said, with several Republicans railing against the administration, including GOP Rep. Marjorie Taylor Greene of Georgia, who said that the Pentagon made the president — whom she noted she doesn’t like — look weak by their actions.

In response, the briefers tried to lay out a detailed timeline of the actions, the sources said.

President Joe Biden suggested Wednesday that bilateral relations with China had not been affected by the balloon fallout, but China reacted angrily to the shootdown, refusing a call with Secretary of Defense Lloyd Austin, and Secretary of State Antony Blinken canceled a high-stakes trip to Beijing on Friday. New sanctions in response to the balloon would likely further inflame tensions.

“We know these balloons are all part of a PRC fleet of balloons developed to conduct surveillance operations. These kinds of activities are often undertaken at the direction of the People’s Liberation Army (PLA),” the senior State Department official added.

Still, lawmakers were told Thursday that the order to send the balloon was dispatched by a part of the Chinese government without Xi Jinping’s knowledge, sources familiar with the briefing said. It’s still unclear what the motivation was.

China “has overflown these surveillance balloons over more than 40 countries across five continents,” the State Department official said, noting that “the Biden Administration is reaching out to countries directly about the scope of this program and answer any questions.”

The official said that based on China’s “messaging and public comments, it’s clear that they have been scrambling to explain why they violated US sovereignty and still have no plausible explanation — and have found themselves on their heels.”

“As we saw with the second balloon over Central and South America that they just acknowledged, they also have no explanation for why they violated the airspace of Central and South American countries,” the official said. “The PRC’s program will only continue to be exposed, making it harder for the PRC to use this program.”

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