Mihdhar left Hazmi in California for Yemen in June 2000. Hazmi stayed in California until he met up with Hani Hanjour in December 2000, and they both traveled to Phoenix, Arizona. They later moved to Falls Church, Virginia in April 2001, where the rest of the hijackers began to join them. Hazmi met frequently with Mohamed Atta, the ringleader of the attacks, during the summer of 2001.