The United States and Britain imposed sanctions on a fundraising network aligned with the Palestinian group Hamas, the U.S. Treasury Department said on Wednesday.

It said in a statement that the punitive measures target two people and three entities described as key financial facilitators involved in fundraising for Hamas, which both countries brand a terrorist group.

“Treasury remains committed to degrading Hamas’ ability to finance its terrorist activities, including through online fundraising campaigns that seek to funnel money directly to the group,” Treasury Undersecretary Brian Nelson said in the statement.

“This action is being taken as part of a collaborative effort with the United Kingdom’s Office of Foreign Sanctions Implementation, which is implementing sanctions on these same targets,” the statement said.

The measures target the Gaza Now organization, which the Treasury Department said had started raising money online after the October 7 Hamas attack on Israel. It is the fourth U.S. and British coordinated sanctions action related to Hamas fundraising efforts since then.

Israel says Hamas fighters killed 1,200 people in the October attack and still hold more than 130 hostages in Gaza. More than 32,000 Palestinians have been killed in Israel’s subsequent offensive in Gaza, the Hamas-ruled Gaza Health Ministry said on Wednesday.