A handwritten journal seized during the U.S. raid at Abbottabad mansion in Pakistan, where Osama bin Laden was killed, reveals that the slain Al-Qaeda leader was preoccupied with attacking the United States over all other targets.

“You've got to focus on the US and the West,” Osama wrote in the journal, a U.S. investigative official was quoted as saying by CNN.

The journal also depicts that he was in constant touch with other terrorists and was sharing ideas with his followers, though there is no indication of actual plans of the attacks.

The journal includes information about the importance of attacking the U.S. and lists key dates on the American calendar, including July 4, Christmas and the 10th anniversary of September 11, and other guidance for how to attack the United States, the official said, adding that both New York and Washington are mentioned in the document.

Bin Laden’s handwritten notes confirm that Osama served as the “crime boss” giving guidance to other terrorists, even as he was sealed inside a campus in the Pakistani city, the official said.