Saudi Arabia has stripped citizenship from Hamza bin Laden, the son of slain al-Qaeda leader Osama bin Laden, the interior ministry said in a statement published by the official gazette. The Saudi decision was made by a royal order in November, according to a statement published in the Um al-Qura official journal. The US State Department said on Thursday it was offering a reward of up to $1 million for information leading "to the identification or location in any country" of Hamza, calling him a key al-Qaeda leader.