The group added to the U.S. sanctions list is Tsav 9, which says aid should be stopped because it ends up in the hands of Hamas.

For months, Tsav 9 activists have organized to block convoys, harass aid workers and damage aid trucks as well as goods meant to alleviate pervasive hunger and suffering in Gaza. The group’s name means Order 9 in Hebrew, a reference to the military’s order calling up reservists.

The announcement by the State Department of the financial restrictions on Tsav 9 cites a May 13 incident in which activists looted and then set fire to two trucks in the West Bank carrying aid bound for Gaza.