US accuses John McAfee of failing to file tax returns and hiding assets, and is seeking his extradition from Spain.

The Justice Department in Washington said McAfee is accused of failing to file U.S. tax returns from 2014 to 2018 and hiding assets including real estate, a vehicle and a yacht in the name of others, prosecutors said. An indictment returned in June was unsealed on Tuesday after he was taken into custody. He’s being held pending extradition.

Prosecutors claim McAfee earned millions of dollars through the promotion of cryptocurrencies, speaking engagements, consulting jobs and the sale of the rights to his life story for a documentary, but never filed tax returns. Instead, his income was paid into accounts held in the names of others, prosecutors claim.

He faces as long as five years in prison if convicted of tax evasion and a year if found guilty of failing to file taxes.