Government officials are closely tracking a massive surveillance balloon believed to be from China as it travels across the U.S.
The white balloon, which China's foreign ministry has claimed to be used for meteorological purposes, is at an altitude of around 60,000 feet with a vessel described as the size of three buses, officials said.
Chinese spy balloon sightings
ABC News Illustration / Google Earth
According to U.S. officials, the balloon traveled west of Alaska, south over the Aleutian Islands, over water into southwest Canada and then over Montana.
Social media sightings have been popping up as the balloon moves southeastwardly across the continental U.S.
One of the earliest sightings confirmed by ABC News was around 4:21 p.m. ET Wednesday in Reed Point, Montana.
More than two hours later, around 6:46 p.m. ET, it was filmed east of Reed Point, in Billings, Montana. Other footage captured it over Billings over the next hour, as civilians wondered what the object was.
From Montana, the balloon traveled southwest through South Dakota and Nebraska, according to U.S. officials.
ABC News has not confirmed any other sightings of the balloon until around 9:41 a.m. ET on Friday, when it was filmed over Sabetha, Kansas.
Over an hour later, it appeared farther east over Saint Joseph, Missouri, where it was filmed around 11 a.m. ET.
Video footage captured the balloon farther east, over Cameron, Missouri, between 11:56 a.m. and 12:28 p.m. ET.
About 30 minutes later, it was shot farther south within the Kansas City metro area, in Lee's Summit, Missouri.
The balloon appears to be heading toward North Carolina, according to a senior U.S. official familiar with the situation. The U.S. will likely wait until it is over the Atlantic Ocean to then try to shoot it down and retrieve it, the official said.
