be found throughout the day. courtney robinson is live at bancroft elementary with the latest. many school officials began calling the fbi this morning when they found these letters, those officials here at bancroft elementary. they saw the letter, they toucht didn t fbi, not because of yesterday s coverage of a ofilar letters but because lasts they receive just october that was almost .dentical it is another day of alarms and at dozens of the d.c. schools. yes, i am [unintelligible] some parents say for good reason. elementary, middle, and high school officials began discovering envelopes postmarked dallas. inside, a piece of paper with al qaeda, fbi, usa analysis shows some of the starch.o be they are continuing to test the overwhelming amount of evidence lab to find who responsible. we are having a laboratory for hazardous material within the powder. similar occurrences occurred or around the country a number of times now. we have yet to see theuation s t