The FBI seized approximately $560,000 in cryptocurrency and took control of online infrastructure allegedly used by Hamas to collect donations, the Justice Department announced Tuesday.

According to the Justice Department, the funds were intended for Hamas' military wing, the Al Qassam Brigades. Hamas has been designated a foreign terrorist organization by the United States since 1997, which makes providing it with material support a federal crime. Investigators traced and confiscated the crypto under three warrants dated March 25, June 25, and October 10, 2025. Agents also took control of domains and servers linked to AlQassam.ps.

"Hamas relied on cryptocurrency and online platforms to solicit funds from donors around the world," said Brett Leatherman, Assistant Director of the FBI's Cyber Division, in a statement. "The FBI will continue to use its authorities to intercept illicit funds and prevent terrorist organizations from exploiting digital networks to finance their operations."

Court filings allege that an encrypted group chat directed supporters to AlQassam.ps, where rotating wallet addresses solicited donations. The use of rotating addresses is a common tactic intended to complicate tracing, though blockchain records are publicly viewable by design, which is what allows law enforcement agencies to follow and seize funds after obtaining warrants.

While the announcement did not name the cryptocurrencies involved, accompanying court filings identified Bitcoin, Ethereum, Wrapped Ethereum, Tether, and Tron across 18 Tether-controlled addresses and three Binance accounts allegedly linked to financing a foreign terrorist organization.

The action follows years of efforts by authorities to disrupt Hamas-linked cryptocurrency fundraising. Israeli police froze Hamas-linked Binance accounts in 2023, and in a separate review in 2024, Binance said it had frozen about 14% of more than 1,500 wallets flagged by Israel. In March 2025, a U.S. warrant led to the seizure of $201,400 in crypto from addresses that authorities said had received more than $1.5 million since October 2024.

In related actions, the FBI seized the fundraising site's domains and servers, enabling agents to intercept donations and obtain information on thousands of people who contacted Hamas about contributing.

Federal prosecutors framed the operation as a warning that neither online networks nor cryptocurrency can shield Hamas' fundraising from law enforcement.

"A message to Hamas: We will stop your fundraising for terror," U.S. Attorney Jeanine Ferris Pirro said in a statement. "Your networks are not secure, your crypto is vulnerable, and we will not stop until your ability to wage war is defeated."