The Chinese 'spy balloon' that flew across the US in February gathered intelligence from several American military sites before it was shot down, according to two senior US officials and a former senior administration official, APA reports citing NBC news.
The sources said China could have gathered more intelligence if not for the Biden administration's efforts to block it.
The balloon entered US airspace on 28 January and was shot down on 4 February after passing over US nuclear missile sites, including the Malmstrom Air Base in Montana.
The intel collected was mostly from electronic signals, rather than images, the officials told NBC.
China previously claimed that the balloon was a civilian weather balloon that strayed off course. The foreign ministry condemned its shooting down as an 'overreaction'.