The U.S. Department of Justice has accused a Hamas member in Gaza and three U.S. citizens of involvement in an international network that, according to prosecutors, raised more than $1.7 million in “humanitarian aid” for Hamas.

According to the indictment, at least $626,000 of this amount was collected from donors in the United States. Prosecutors say these campaigns claimed the money would be used to provide food, winter supplies, and other aid to Palestinian families in Gaza, but the funds were transferred to Hamas.

The U.S. Department of Justice identified Salim al-Zaq, 45, who lives in Gaza, as a Hamas member and the deputy of one of the group’s military wing units. He has not been arrested. The three other defendants—Abdel Adhamie, Omar Adhamie, and Raed Youssef—have been arrested in the United States. French authorities have also arrested three other individuals connected to the network.

Prosecutors say al-Zaq asked supporters not to mention Hamas by name when transferring money, in order to prevent the fundraising accounts from being blocked, and not to write phrases such as “Long live Hamas” in payments made through “PayPal.”