SARAH N. LYNCH THE arraignment of a Libyan intelligence operative suspected of making the bomb that blew up Pan Am flight 103 over Lockerbie, Scotland, in 1988 and killed 270 people was deferred due to delays and challenges securing a defence attorney. Abu Agila Mohammad Mas'ud Kheir Al-Marimi, 71, is the first suspect in the attack to face criminal charges in the United States. The bomb exploded aboard a Boeing 747 over Lockerbie as it flew from London to New York in December 1988. All 259 people on board were killed, and another 11 people died on the ground. U.S.…