The U.S. Treasury’s Office of Foreign Assets Control designated a UK-based senior Egyptian Muslim Brotherhood official, Mahmoud al-Abyari, along with three individuals and three entities, for providing material support to Hamas. The targets include front charities and entities in Egypt, the UK, Indonesia, Gaza, and Türkiye, used to move funds to Hamas’s military wing through sham charities and underground banking networks. Treasury says the action reveals a multi-layered, transnational fundraising system that disguises transfers via charities, businesses, and informal channels, with sanctions blocking property and prohibiting U.S. transactions. The crackdown builds on prior measures and was coordinated with the FBI, DEA, and Customs and Border Protection, signaling broad interagency cooperation. Treasury Secretary Scott Bessent said the administration will relentlessly pursue terrorists and those who finance them, including those operating through charitable façades and underground networks. The sanctions represent ongoing efforts to disrupt Hamas financing and expand the reach of OFAC actions across jurisdictions as part of broader counterterrorism efforts.