 On the morning of September 11, 2001, Mihdhar boarded American Airlines Flight 77, which was hijacked approximately 30 minutes after takeoff.The plane was deliberately crashed into the Pentagon, killing all 64 people aboard the flight, along with 125 on the ground.Al-Mihdhar was born on May 16, 1975, in Mecca, Saudi Arabia to a prominent family, related to the Quraysh tribe of Mecca.