Terrorist friendship: Bin Landen's son marries September 11th attacker's daughter

The bride's name has not been revealed, but is believed to be Egyptian citizens at the end of adolescence or early 20s.

Hamza is said to be number two in the al-Qaeda organisation, while the current leader is Ayman al-Zawahiri.

Bin Laden's family have claimed Hamza was intent on revenge for his father's death, who was killed in an attack seven years ago.

For two years, US intelligence agencies have been searching for Hamza bin Laden, but his whereabouts are unknown, but are thought to be within Afghanistan's territory.