NEW : A first source says Pakistani were aware of heightened activity , but did not pinpoint it to Osama bin Laden . Pakistan knew about the intelligence activity in the city Abbottabad , first source says . Pakistani officials did not suspect the uptick in activity was tied to Abbottabad , first source says . The diplomat , who wished to remain anonymous because he is not authorized to speak publicly , said Pakistan knew about the heightened intelligence activity , specifically in the city of Abbottabad , but `` never , never had any idea the operation was about bin Laden . '' The relationship between Pakistan and Abbottabad is increasingly strained .
NEW : A first source says Pakistani were aware of heightened activity , but did not pinpoint it to Osama bin Laden . Pakistan knew about the intelligence activity in the city Abbottabad , first source says . Pakistani officials did not suspect the uptick in activity was tied to Abbottabad , first source says . The relationship between Pakistan and Abbottabad is increasingly strained .