Their business relation with the Saudi entrepreneur Yasin Kadi brought the Zapsu brothers some attention by the Turkish authorities, since Kadi was on the financiers of terror list of the United Nations (UN). Cuneyd Zapsu and his mother also donated an amount of 300'000$ to the charity Mufaqaf in 1990s, which is closely related to Yasin Kadi and had been classified as to be connected to Al Qaeda by the United States following the attack on the 11 September 2001 on the Twin Towers in New York. But according to Forbes, Aziz Zapsu stated that there have been no irregularities in their business relations and also Guy Martin, the lawyer of Yasin Kadi stated that no UN sanctions were breached with the transactions in question. Today Yasin Kadi is cleared on all allegations.