U.S. military fighter aircraft shot down a suspected Chinese spy balloon as it floated off the coast of South Carolina on Saturday, drawing to a close a dramatic saga that shone a spotlight on worsening Sino-U.S. relations.

“We successfully took it down, and I want to compliment our aviators who did it,” President Joe Biden said.

Biden said he had issued an order on Wednesday to take down the balloon, but the Pentagon had recommended waiting until it could be done over open water to safeguard civilians from debris crashing down to Earth from thousands of feet (meters) above commercial air traffic.

China has mounted “the largest intelligence operation in the history of the human race” against the US and Australia, a former top US intelligence official has warned, as the US military shot down a Chinese spy balloon as it neared the Atlantic coast above the Carolinas.

Multiple fighter and refueling aircraft were involved in the mission, but only one — an F-22 fighter jet from Langley Air Force Base in Virginia — took the shot at 2:39 p.m. (1939 GMT), using a single AIM-9X supersonic, heat-seeking, air-to-air missile, a senior U.S. military official said.

The balloon was shot down about six nautical miles off the U.S. coast, over relatively shallow water, potentially aiding efforts to recover key elements of the Chinese surveillance equipment among the debris in the coming days, officials said.

Ukrainian President Volodymyr Zelenskiy says the situation on the front lines in the east of the country is getting tougher and Russia was throwing more and more troops into battle.

Russian forces are slowly gaining ground in the Donbas region, encircling the city of Bakhmut north of Donetsk and battling to take control of a nearby road which is a major supply route for Ukrainian forces. They are also trying to capture Vuhledar, southwest of Donetsk.

China claims an “airship” that is flying over the United States is for civilian meteorological and other scientific purposes and voiced regret that it strayed into U.S. airspace.

U.S. officials said on Thursday that a Chinese spy balloon has been flying over the United States for a couple of days, in what would be a brazen act just days ahead of a planned trip to Beijing by U.S. Secretary of State Antony Blinken.

In a statement late on Friday, China’s foreign ministry also said that it would continue to maintain communications with the United States to properly handle the unexpected situation.

“The airship is from China and is civilian in nature, used for meteorological and other scientific research. Due to the influence of westerly winds and its limited control capability, the airship deviated from its intended course,” it said.

“China regrets that the airship strayed into the United States by mistake due to force majeure. China will continue to maintain communication with the U.S. side to properly handle this accident,” it said.