Ten of the prisoners who are to be released in exchange for Ilan Grapel are terrorists, the Almagor organization for terror victims warned Tuesday. The prisoners, Egyptian citizens, were convicted of smuggling weapons to terrorist groups, Almagor said.

Egypt has demanded the prisoners’ freedom in exchange for freedom for Ilan Grapel, a young American-Israeli man arrested in Cairo and accused of spying. The exchange is to take place Thursday.