QUES: Southwest said it had already inspected its fleet of 385 aircraft and found no additional suspicious items .

Southwest said it completed inspections of its entire fleet of 385 aircraft and found no additional items .

The sentences above mean the same or not?
****
ANS: yes

QUES: US authorities blame Al Qaeda for the attacks , which killed 231 people , including 12 Americans .

U.S. authorities blame Osama bin Laden 's al-Qaida network for the attacks , which killed 231 people , including 12 Americans .

The sentences above mean the same or not?
****
ANS: yes

QUES: The SEC specifically advised IBM that this is a fact-finding investigation and that it has not reached any conclusions related to this matter , IBM said in a statement .

Big Blue says the SEC calls the action a fact-finding investigation and has not reached any conclusions related to this matter .

The sentences above mean the same or not?
****
ANS:
yes