(CNN)The United States is now working on the assumption that Charlie Hebdo attacker Said Kouachi met American terrorist cleric Anwar al-Awlaki at some point in Yemen and received orders from al Qaeda in the Arabian Peninsula (AQAP) to carry out an attack, a U.S. official tells CNN.

The official said Kouachi's motivation for waiting so long -- possibly since 2011 -- to launch an attack was not clear.

U.S. officials Sunday said American authorities don't have evidence yet directly linking AQAP to specifically ordering the Paris attack last week at the offices of the satirical magaine. "We don't have credible information, at least as yet, to indicate who was responsible, who sponsored this act. That is clearly one of the things that we have to make a determination of," Attorney General Eric Holder told CNN's Gloria Borger on "State of the Union."

French security agencies had been monitoring Said Kouachi and his brother, Cherif, but stopped months before the two carried out the attack that left 12 people dead. The French monitoring faded despite a previous tip-off from American intelligence agencies that one of them had likely trained with al Qaeda in Yemen, a French news magazine reported Saturday.

Said Kouachi is suspected of slipping off for terror training in Yemen during a trip he made with another French national to Oman between July 25 and August 15 in 2011, according to multiple French officials who spoke to L'Express national security reporter Eric Pelletier. Pelletier shared the details of his reporting with CNN.

1. Who is AQAP?
2. Do American authorities have evidence linking them to the Paris attack?
3. Who is suspected of doing it?
4. Where did he train?
5. When was he in Yemen?
6. Did he go with anyone else?
7. What was his name?
8. Did he meet with anyone there?
9. Who?
10. Do authorities think he ordered the attack?
11. Who was attacked?
12. why did he wait so long to attack?
13. Was Said being monitored when the attack was carried out?
14. How about before that?

Provide a numbered list of answers.
1. al Qaeda in the Arabian Peninsula
2. no
3. Said Kouachi
4. in Yemen
5. between July 25 and August 15 in 2011
6. with another French national
7. unknown
8. yes
9. American terrorist cleric Anwar al-Awlak
10. no
11. Paris
12. unclear
13. no
14. yes