U.S. Treasury officials have frozen the assets of an Ohio-based nonprofit group because they say it has ties to the Palestinian militant organization Hamas.
Officials said Sunday that the group named KindHearts has coordinated with Hamas leaders and has ties to two other U.S.-based charities accused of links to terrorism.
Those groups were shut down by U.S. officials in late 2001.
KindHearts describes itself on its Web site as a nonprofit charitable organization administering humanitarian aid to the world's poor.
KindHearts officials have not commented on the alleged links to terrorism.
Hamas dominated recent Palestinian elections, but U.S. officials regard it as a terrorist organization. The group refuses to recognize Israel's right to exist and has organized suicide attacks against Israeli targets in the past.
Some information for this report was provided by AP and Reuters.