(CNN) -- The man suspected to be at the center of the plot to send bombs from Yemen to the United States is a Saudi national who authorities believe has been living in Yemen for the past three years. 

Ibrahim Hassan al-Asiri is one of Saudi Arabia's most wanted men, according to a list published by the government last year. The Saudi government described al-Asiri as an explosives and poison expert. 

On Friday, authorities in the United Arab Emirates and Britain found two packages with explosives that were destined for synagogues in Chicago, Illinois. 

U.S. investigators believe al Qaeda bomb maker al-Asiri, 28, is linked to the packages. 

The explosive found in the packages, PETN, is the same as the material found in the December 2009 foiled underwear bomb attack in the United States. It's a highly explosive organic compound that belongs to the same chemical family as nitroglycerin. Six grams of PETN are enough to blow a hole in the fuselage of an aircraft. 

Al-Asiri was also suspected in the earlier attempted bombing case, where a Nigerian man, Umar Farouk AbdulMutallab, is accused of trying to set off a bomb hidden in his underwear on a flight. 

Al-Asiri's brother, Abdullah, also appeared on the Saudi Arabia's most wanted list. According to press accounts, it was Ibrahim al-Asiri who lured his brother to the jihadist movement. 

In 2009, Abdullah al-Asiri died when he detonated a bomb on his body with the intent of assassinating Saudi Prince Muhammed Bin Naif, a top security official. The suicide bombing attempt failed to kill its target. 
Who is wanted?
For what?
To do what with?
Is he an American?
Where is he from?
Where has he been recently?
For how long?
Is he a novice at making devices?
Does he work with any other dangerous items?
What?
How well does he understand these topics?
Was a religious establishment a target?
What kind?
In what city?
Is that in Canada?
What happened on a flight?
Where did he hide it?
What else happened that same year?
How did he die?
Ibrahim Hassan al-Asiri.
Ibrahim Hassan al-Asiri is one of Saudi Arabia's most wanted men
Making explosive devices.
Ibrahim Hassan al-Asiri is one of Saudi Arabia's most wanted men, according to a list published by the government last year. The Saudi government described al-Asiri as an explosives and poison exper
Send from Yemen to the United States.
The man suspected to be at the center of the plot to send bombs from Yemen to the United States
No.
The man suspected to be at the center of the plot to send bombs from Yemen to the United States is a Saudi national who authorities believe has been living in Yemen for the past three years. 
Saudi Arabia.
The man suspected to be at the center of the plot to send bombs from Yemen to the United States is a Saudi national who authorities believe has been living in Yemen for the past three years. 
Yemen.
The man suspected to be at the center of the plot to send bombs from Yemen to the United States is a Saudi national who authorities believe has been living in Yemen for the past three years.
The past three years.
The man suspected to be at the center of the plot to send bombs from Yemen to the United States is a Saudi national who authorities believe has been living in Yemen for the past three years. 
No.
Saudi government described al-Asiri as an explosives and poison expert. 
Yes.
Saudi government described al-Asiri as an explosives and poison expert. 
Poison.
Saudi government described al-Asiri as an explosives and poison expert. 
Very well.
Saudi government described al-Asiri as an explosives and poison expert. 
Yes.
On Friday, authorities in the United Arab Emirates and Britain found two packages with explosives that were destined for synagogues in Chicago, Illinois. 
Synagogues.
On Friday, authorities in the United Arab Emirates and Britain found two packages with explosives that were destined for synagogues in Chicago, Illinois. 
Chicago.
On Friday, authorities in the United Arab Emirates and Britain found two packages with explosives that were destined for synagogues in Chicago, Illinois. 
No.
On Friday, authorities in the United Arab Emirates and Britain found two packages with explosives that were destined for synagogues in Chicago, Illinois. 
A man tried to set off an explosive device.
Al-Asiri was also suspected in the earlier attempted bombing case, where a Nigerian man, Umar Farouk AbdulMutallab, is accused of trying to set off a bomb hidden in his underwear on a flight. 
In his underwear.
Al-Asiri was also suspected in the earlier attempted bombing case, where a Nigerian man, Umar Farouk AbdulMutallab, is accused of trying to set off a bomb hidden in his underwear on a flight. 
Another man died in an assassination attempt.
In 2009, Abdullah al-Asiri died when he detonated a bomb on his body with the intent of assassinating Saudi Prince Muhammed Bin Naif, a top security official. 
He detonated a bomb on his body
In 2009, Abdullah al-Asiri died when he detonated a bomb on his body with the intent of assassinating Saudi Prince Muhammed Bin Naif, a top security official. The suicide bombing attempt failed to kill its target.