After a yearslong battle to avoid extradition, Canada’s so-called Prince of Pot was brought Thursday to Seattle, where he is expected to plead guilty to a charge that he sold millions of marijuana seeds to U.S. customers.

Marc Emery, wearing a V-neck sweater over a collared shirt, appeared in U.S. District Court and agreed to remain in custody pending his plea hearing on Monday. Canada’s justice minister signed off on Emery’s extradition to the United States on May 10.