An FBI agent who interrogated Zacarias Moussaoui before Sept. 11, 2001, warned his supervisors more than 70 times that Moussaoui was a terrorist and spelled out his suspicions that the al-Qaeda operative was plotting to hijack an airplane, according to federal court testimony yesterday. Agent Harry Samit told jurors at Moussaoui’s death penalty trial that his efforts to secure a warrant to search Moussaoui’s belongings were frustrated at every turn by FBI officials he accused of “criminal negligence.” Samit said he had sought help from a colleague, writing that he was “so desperate to get into Moussaoui’s computer I’ll take anything.” Full Story