Steve Bannon , a former chief strategist in President Donald Trump s White House, was arrested on Thursday after a grand jury indicted him on federal charges for allegedly using hundreds of thousands of dollars from an online We Build The Wall fundraiser to cover his personal expenses.

He pleaded not guilty at a hearing Thursday afternoon.

Bannon and three others Brian Kolfage, Andrew Badolato and Timothy Shea were charged in connection with their roles in defrauding hundreds of thousands of donors in connection with an online crowdfunding campaign known as We Build the Wall that raised more than $25 million, the U.S. Attorneys Office for the Southern District of New York announced Thursday morning.

The four defendants are each charged with one count of conspiracy to commit wire fraud and one count of conspiracy to commit money laundering. Each charge carries a maximum penalty of 20 years in prison.