In the autumn of 1999, these four attended the Mes Aynak training camp in Afghanistan, which provided advanced training. Hazmi went with the two Yemenis, Tawfiq bin Attash (Khallad) and Abu Bara al Yemeni, to Karachi, Pakistan, where Khalid Sheikh Mohammed, the plot's coordinator, instructed him on western culture, travel, as well as taught some basic English phrases. Mihdhar did not go with him to Karachi, but instead left for Yemen.