So he headed to Grand Central Terminal and boarded a train to Connecticut . Degree of involvement has not been determined , official says . Ali Shahzad probably worked with extremists in Pakistan , official says . Suspect 's name , four other men interrogated in Pakistan .
Degree of involvement has not been determined , official says . Ali Shahzad probably worked with extremists in Pakistan , official says . Suspect 's name , four other men interrogated in Pakistan .