Kingdom of Hejaz
Many of the conspirators were of Hejazi origin; there was an independent Kingdom of Hejaz, until it was annexed by the Saudis in 1925. One of the key conspirators, Yusuf Tawwil, a Hejazi merchant and acquaintance of Prince Fahd, was believed to hold Hejazi separatist beliefs. Others involved in the plot were Najdis or Sunnis from the Eastern Province.