Maybe they came from China. Maybe from somewhere farther away. A lot farther away.

The downing of four aerial devices by US warplanes has touched off rampant misinformation about the objects, their origin and their purpose, showing how complicated world events and a lack of information can quickly create the perfect conditions for unchecked conjecture and misinformation.

The presence of mysterious objects high in the sky doesn't help.

“There will be an investigation and we will learn more, but until then this story has created a playground for people interested in speculating or stirring the pot for their own reasons," said Jim Ludes, a former national defence analyst who now leads the Pell Center for International Relations at Salve Regina University.

“In part," Ludes added, "because it feeds into so many narratives about government secrecy.”

President Joe Biden and other top Washington officials have said little about the repeated shootdowns, which began with a suspected Chinese spy balloon earlier this month. Three more unidentified devices have been shot down, with the latest Sunday over Lake Huron. Pentagon officials said they posed no security threats but have not disclosed their origins or purpose.

On Monday, many social media sites in the US lit up with theories that Biden had deployed the aerial devices as a way to distract Americans from other, more pressing issues. Those concerns included immigration, inflation, the war in Ukraine and Republican investigations into Hunter Biden, the president's son.

While the concentration of claims was highest on fringe sites popular with far-right Americans, the unfounded rumours and conspiracy theories popped up on bigger platforms like Twitter and Facebook, too.

One of the most popular theories suggested the White House and Pentagon are using the airborne devices to divert attention from a chemical spill earlier this month in Ohio.

That incident, caused by a train derailment, occurred several days before the most recent devices were shot down, and was covered extensively. Nonetheless, it remained the top subject searched on Google on Monday, showing continued public interest in the story.

Some commenters said Biden's decision to wait until the balloon had reached the East Coast before shooting it down showed he was in league with China. Others, meanwhile, chastised Biden for shooting down foreign aircraft that they imagined could be carrying bioweapons or nuclear weapons.

Misleading claims about the airborne devices have also prompted violent threats, according to an analysis by the SITE Intelligence Group, a firm that tracks extremist rhetoric online.?

After the White House said earlier surveillance flights went undetected during Donald Trump's presidency, an article circulated on far-right sites urging the execution of any Trump administration officials who may have withheld the information.

Trump administration officials have said they knew of no such surveillance craft.

Alongside the political conspiracy theories were suggestions that the aerial objects were extraterrestrial in origin. Photos of alleged UFOs were shared online and web searches for the term “UFO” soared around the world Sunday, according to information from Google Trends.

“Don't worry, just some of my friends of mine stopping by,” Elon Musk, the CEO of Twitter, Tesla and SpaceX, joked in a tweet Sunday.

Humour aside, while the details of the different claims vary, they have two things in common: a lack of evidence and a strong distrust of America's elected leaders.

“Maybe Joe built the balloon & had Hunter launch it to scare we the people!” wrote one Facebook user. “How do WE know??? We don't!”

The federal government must balance the public's desire to know the details with the need for secrecy regarding national security and defence, Ludes said. That's not likely to satisfy Biden's critics, Ludes said, or prevent misleading explanations from going viral.

High-profile news stories and events often precede a spike in false and misleading claims as people turn to the internet for explanations. Conspiracy theories about Buffalo Bills player Damar Hamlin spread quickly after his dramatic on-field collapse in January. Something similar happened last year when the Nord Stream pipelines in the North Sea were damaged.

In that instance, Russia spread conspiracy theories blaming the US for the sabotage. The baseless theories were quickly amplified by far-right users in the US. It's not the first time America's authoritarian adversaries have seized on global events to portray the US as belligerent.

China has claimed the balloon shot down February 4 was engaged in meteorological research. On Monday, China's foreign ministry said 10 US balloons had entered Chinese airspace without permission in the past year.

Beijing's response to this latest diplomatic row seeks to portray China as the responsible actor, while sidestepping surveillance allegations made by the US, according to Kenton Thibault, a China expert at the Atlantic Council's Digital Forensic Research Lab, a Washington-based nonprofit that tracks foreign disinformation and propaganda.

“It's about projecting an image of responsibility and rationality, of being the adult in the room,” Thibault said of China's response. “It's a clear signal to nations in the developing world that the US is selfish, untrustworthy and hypocritical.”

On Monday, White House press secretary Karine Jean-Pierre officials did refute one viral claim to have emerged from the balloon saga.

“I know there have been questions and concerns about this, but there is no — again no indication — of aliens or extraterrestrial activity with these recent takedowns,” Jean-Pierre told reporters. “I wanted to make sure that the American people knew that, all of you knew that and it was important for us to say that from here because we've been hearing a lot about it.”