The United States Government has announced it is offering a $US1 million ($1.41 million) reward for information that helps track down the son of the late terrorist leader, Osama bin Laden.

Key points: The US says Hamza bin Laden was groomed by his father to take over Al Qaeda

The US says Hamza bin Laden was groomed by his father to take over Al Qaeda Hamza has reportedly released messages calling for attacks against the US and allies

Hamza has reportedly released messages calling for attacks against the US and allies UN member states have been ordered to freeze his assets and comply with a travel ban

A State Department notice issued Thursday said the reward would be paid for help locating Hamza bin Laden in any country as part its counter-terrorism "rewards for justice" program.

The announcement said Hamza bin Laden son was "an emerging Al Qaeda leader" and promised relocation for information.

Osama bin Laden co-founded Al Qaeda in 1988.

The terrorist organisation was responsible for the September 11, 2001 attacks in the US and other notorious actions.

Osama bin Laden was killed in a night-time US military raid in Pakistan in May 2011.

US officials said Hamza bin Laden had released audio and video messages calling for attacks against the US and its allies, and that he was named a "specially designated global terrorist" in January 2017.

According to the State Department, letters seized during the raid on Osama bin Laden's compound in May 2011 indicated the leader was grooming his son to one day lead Al Qaeda.

The US said Hamza bin Laden is between 30 and 33 years old, and that he is married to the daughter of Mohammed Atta, one of the masterminds and the lead hijacker in the September 11 attacks.

In November 2017, the CIA released some 470,000 files from the May 2011 raid, including footage of Hamza bin Laden during his wedding.

Loading...

State Department ambassador-at-large and counterterrorism coordinator Nathan Sales tweeted a statement saying the United Nations' Al Qaeda Sanctions Committee designated Hamza bin Laden an Al Qaeda affiliate, and therefore "all UN member states were to are required to freeze his assets, comply with a travel ban, and enforce an arms embargo barring the sale or transfer of weapons".

ABC/wires