Factbox: Who is Ibrahim al-Asiri?
DUBAI (Reuters) - A Saudi bomb-maker believed to be working with al Qaeda's Yemen-based wing is a key suspect in the parcel bomb plot against the United States.
Governments around the world are reviewing security after the bombs were intercepted in Dubai and Britain on Friday. The bombs had all the hallmarks of al Qaeda, officials say.
Ibrahim Hassan al-Asiri is being closely looked at by authorities in view of his experience with explosives, a U.S. official told Reuters.
Here are some details about Asiri, compiled from Saudi intelligence, security analysts and Saudi media:
* Asiri was born in 1982 in Saudi Arabia to a military family. He is believed to have fled to Yemen to work with al Qaeda's Yemen-based regional wing, Al Qaeda in the Arabian Peninsula (AQAP).
* Asiri tops Saudi Arabia's terrorism wanted list and is the older brother of a suicide bomber who died last year while trying to assassinate Saudi counter-terrorism chief Prince Mohammed bin Nayef.
* Saudi intelligence lists Asiri's whereabouts as unknown but says he fled Saudi Arabia to join al Qaeda in Yemen and was trained in weaponry and bomb-making. He is also an expert in toxins.
* U.S. intelligence officials suspect Asiri may have been involved in making the bombs for two other attempts by AQAP, the failed suicide attack on Prince Mohammed bin Nayef last year and a bomb attempt on a U.S.-bound plane in December.
* Asiri was previously arrested by Saudi forces as he was suspected of trying to enter Iraq to join an Islamist militant group there. He went missing in 2007.
(Compiled by Erika Solomon and Ulf Laessing)