The Treasury Department designated a group housed at a charity in the United States as an “international fundraiser” for the Popular Front for the Liberation of Palestine, a U.S.-designated terrorist organization, the agency said on Tuesday.

The agency’s Office of Foreign Assets Control took action in partnership with Canada against the Samidoun Palestinian Prisoner Solidarity Network. A Washington Examiner investigation over the last two years laid bare the group’s ties to the PFLP, which had prompted payment processors such as PayPal, Stripe, Deluxe, and Salsa Labs to allow it to fundraise online no longer.