Steve Bannon, President Trump's former political adviser, has been arrested alongside three other people in connection with an online fundraising scheme that federal prosecutors in New York say was responsible for defrauding hundreds of thousands of people.

Bannon and the three other defendants are alleged to have orchestrated a scheme around an online crowdfunding campaign called "We Build the Wall," which has raised over $25 million, according to prosecutors. The campaign was advertised as an effort to build portions of the wall along the U.S.-Mexico border and support maintenance operations.